diff --git a/GFramework.Game.Tests/Config/YamlConfigLoaderTests.cs b/GFramework.Game.Tests/Config/YamlConfigLoaderTests.cs
index 1757e22d..cc088e19 100644
--- a/GFramework.Game.Tests/Config/YamlConfigLoaderTests.cs
+++ b/GFramework.Game.Tests/Config/YamlConfigLoaderTests.cs
@@ -1248,6 +1248,115 @@ public class YamlConfigLoaderTests
         });
     }
 
+    /// <summary>
+    ///     验证对象字段不满足 <c>minProperties</c> 时会在运行时被拒绝。
+    /// </summary>
+    [Test]
+    public void LoadAsync_Should_Throw_When_Object_Violates_MinProperties()
+    {
+        CreateConfigFile(
+            "monster/slime.yaml",
+            """
+            id: 1
+            name: Slime
+            reward:
+              gold: 10
+            """);
+        CreateSchemaFile(
+            "schemas/monster.schema.json",
+            """
+            {
+              "type": "object",
+              "required": ["id", "name", "reward"],
+              "properties": {
+                "id": { "type": "integer" },
+                "name": { "type": "string" },
+                "reward": {
+                  "type": "object",
+                  "minProperties": 2,
+                  "properties": {
+                    "gold": { "type": "integer" },
+                    "currency": { "type": "string" }
+                  }
+                }
+              }
+            }
+            """);
+
+        var loader = new YamlConfigLoader(_rootPath)
+            .RegisterTable<int, MonsterNestedConfigStub>("monster", "monster", "schemas/monster.schema.json",
+                static config => config.Id);
+        var registry = new ConfigRegistry();
+
+        var exception = Assert.ThrowsAsync<ConfigLoadException>(async () => await loader.LoadAsync(registry));
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(exception, Is.Not.Null);
+            Assert.That(exception!.Diagnostic.FailureKind, Is.EqualTo(ConfigLoadFailureKind.ConstraintViolation));
+            Assert.That(exception.Diagnostic.DisplayPath, Is.EqualTo("reward"));
+            Assert.That(exception.Diagnostic.RawValue, Is.EqualTo("1"));
+            Assert.That(exception.Message, Does.Contain("at least 2 properties"));
+            Assert.That(registry.Count, Is.EqualTo(0));
+        });
+    }
+
+    /// <summary>
+    ///     验证对象字段不满足 <c>maxProperties</c> 时会在运行时被拒绝。
+    /// </summary>
+    [Test]
+    public void LoadAsync_Should_Throw_When_Object_Violates_MaxProperties()
+    {
+        CreateConfigFile(
+            "monster/slime.yaml",
+            """
+            id: 1
+            name: Slime
+            reward:
+              gold: 10
+              currency: coin
+              tier: epic
+            """);
+        CreateSchemaFile(
+            "schemas/monster.schema.json",
+            """
+            {
+              "type": "object",
+              "required": ["id", "name", "reward"],
+              "properties": {
+                "id": { "type": "integer" },
+                "name": { "type": "string" },
+                "reward": {
+                  "type": "object",
+                  "maxProperties": 2,
+                  "properties": {
+                    "gold": { "type": "integer" },
+                    "currency": { "type": "string" },
+                    "tier": { "type": "string" }
+                  }
+                }
+              }
+            }
+            """);
+
+        var loader = new YamlConfigLoader(_rootPath)
+            .RegisterTable<int, MonsterNestedConfigStub>("monster", "monster", "schemas/monster.schema.json",
+                static config => config.Id);
+        var registry = new ConfigRegistry();
+
+        var exception = Assert.ThrowsAsync<ConfigLoadException>(async () => await loader.LoadAsync(registry));
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(exception, Is.Not.Null);
+            Assert.That(exception!.Diagnostic.FailureKind, Is.EqualTo(ConfigLoadFailureKind.ConstraintViolation));
+            Assert.That(exception.Diagnostic.DisplayPath, Is.EqualTo("reward"));
+            Assert.That(exception.Diagnostic.RawValue, Is.EqualTo("3"));
+            Assert.That(exception.Message, Does.Contain("at most 2 properties"));
+            Assert.That(registry.Count, Is.EqualTo(0));
+        });
+    }
+
     /// <summary>
     ///     验证对象数组中的嵌套字段也会按 schema 递归校验。
     /// </summary>
diff --git a/GFramework.Game/Config/YamlConfigSchemaValidator.cs b/GFramework.Game/Config/YamlConfigSchemaValidator.cs
index 7af85af0..8ed9a213 100644
--- a/GFramework.Game/Config/YamlConfigSchemaValidator.cs
+++ b/GFramework.Game/Config/YamlConfigSchemaValidator.cs
@@ -8,8 +8,9 @@ namespace GFramework.Game.Config;
 ///     提供 YAML 配置文件与 JSON Schema 之间的最小运行时校验能力。
 ///     该校验器与当前配置生成器、VS Code 工具支持的 schema 子集保持一致，
 ///     并通过递归遍历方式覆盖嵌套对象、对象数组、标量数组与深层 enum / 引用约束。
-///     当前共享子集额外支持 <c>multipleOf</c> 与 <c>uniqueItems</c>，
-///     让数值步进和数组去重规则在运行时与生成器 / 工具侧保持一致。
+///     当前共享子集额外支持 <c>multipleOf</c>、<c>uniqueItems</c>、
+///     <c>minProperties</c> 与 <c>maxProperties</c>，
+///     让数值步进、数组去重和对象属性数量规则在运行时与生成器 / 工具侧保持一致。
 /// </summary>
 internal static class YamlConfigSchemaValidator
 {
@@ -321,7 +322,11 @@ internal static class YamlConfigSchemaValidator
                 property.Value);
         }
 
-        return YamlConfigSchemaNode.CreateObject(properties, requiredProperties, schemaPath);
+        return YamlConfigSchemaNode.CreateObject(
+            properties,
+            requiredProperties,
+            ParseObjectConstraints(tableName, schemaPath, propertyPath, element),
+            schemaPath);
     }
 
     /// <summary>
@@ -555,6 +560,66 @@ internal static class YamlConfigSchemaValidator
                 schemaPath: schemaNode.SchemaPathHint,
                 displayPath: requiredPath);
         }
+
+        if (schemaNode.ObjectConstraints is not null)
+        {
+            ValidateObjectConstraints(tableName, yamlPath, displayPath, seenProperties.Count, schemaNode);
+        }
+    }
+
+    /// <summary>
+    ///     校验对象节点声明的属性数量约束。
+    /// </summary>
+    /// <param name="tableName">所属配置表名称。</param>
+    /// <param name="yamlPath">YAML 文件路径。</param>
+    /// <param name="displayPath">对象字段路径；根对象时为空。</param>
+    /// <param name="propertyCount">当前对象实际属性数量。</param>
+    /// <param name="schemaNode">对象 schema 节点。</param>
+    private static void ValidateObjectConstraints(
+        string tableName,
+        string yamlPath,
+        string displayPath,
+        int propertyCount,
+        YamlConfigSchemaNode schemaNode)
+    {
+        var constraints = schemaNode.ObjectConstraints;
+        if (constraints is null)
+        {
+            return;
+        }
+
+        var subject = string.IsNullOrWhiteSpace(displayPath)
+            ? "Root object"
+            : $"Property '{displayPath}'";
+        var rawValue = propertyCount.ToString(CultureInfo.InvariantCulture);
+
+        if (constraints.MinProperties.HasValue &&
+            propertyCount < constraints.MinProperties.Value)
+        {
+            throw ConfigLoadExceptionFactory.Create(
+                ConfigLoadFailureKind.ConstraintViolation,
+                tableName,
+                $"{subject} in config file '{yamlPath}' must contain at least {constraints.MinProperties.Value.ToString(CultureInfo.InvariantCulture)} properties.",
+                yamlPath: yamlPath,
+                schemaPath: schemaNode.SchemaPathHint,
+                displayPath: GetDiagnosticPath(displayPath),
+                rawValue: rawValue,
+                detail: $"Minimum property count: {constraints.MinProperties.Value.ToString(CultureInfo.InvariantCulture)}.");
+        }
+
+        if (constraints.MaxProperties.HasValue &&
+            propertyCount > constraints.MaxProperties.Value)
+        {
+            throw ConfigLoadExceptionFactory.Create(
+                ConfigLoadFailureKind.ConstraintViolation,
+                tableName,
+                $"{subject} in config file '{yamlPath}' must contain at most {constraints.MaxProperties.Value.ToString(CultureInfo.InvariantCulture)} properties.",
+                yamlPath: yamlPath,
+                schemaPath: schemaNode.SchemaPathHint,
+                displayPath: GetDiagnosticPath(displayPath),
+                rawValue: rawValue,
+                detail: $"Maximum property count: {constraints.MaxProperties.Value.ToString(CultureInfo.InvariantCulture)}.");
+        }
     }
 
     /// <summary>
@@ -870,6 +935,48 @@ internal static class YamlConfigSchemaValidator
             : new YamlConfigArrayConstraints(minItems, maxItems, uniqueItems);
     }
 
+    /// <summary>
+    ///     解析对象节点支持的属性数量约束。
+    /// </summary>
+    /// <param name="tableName">所属配置表名称。</param>
+    /// <param name="schemaPath">Schema 文件路径。</param>
+    /// <param name="propertyPath">对象字段路径。</param>
+    /// <param name="element">Schema 节点。</param>
+    /// <returns>对象约束模型；未声明时返回空。</returns>
+    private static YamlConfigObjectConstraints? ParseObjectConstraints(
+        string tableName,
+        string schemaPath,
+        string propertyPath,
+        JsonElement element)
+    {
+        var minProperties = TryParseObjectPropertyCountConstraint(
+            tableName,
+            schemaPath,
+            propertyPath,
+            element,
+            "minProperties");
+        var maxProperties = TryParseObjectPropertyCountConstraint(
+            tableName,
+            schemaPath,
+            propertyPath,
+            element,
+            "maxProperties");
+
+        if (minProperties.HasValue && maxProperties.HasValue && minProperties.Value > maxProperties.Value)
+        {
+            throw ConfigLoadExceptionFactory.Create(
+                ConfigLoadFailureKind.SchemaUnsupported,
+                tableName,
+                $"Property '{propertyPath}' in schema file '{schemaPath}' declares 'minProperties' greater than 'maxProperties'.",
+                schemaPath: schemaPath,
+                displayPath: GetDiagnosticPath(propertyPath));
+        }
+
+        return !minProperties.HasValue && !maxProperties.HasValue
+            ? null
+            : new YamlConfigObjectConstraints(minProperties, maxProperties);
+    }
+
     /// <summary>
     ///     读取数值区间约束。
     /// </summary>
@@ -1100,6 +1207,42 @@ internal static class YamlConfigSchemaValidator
         return constraintValue;
     }
 
+    /// <summary>
+    ///     读取对象属性数量约束。
+    /// </summary>
+    /// <param name="tableName">所属配置表名称。</param>
+    /// <param name="schemaPath">Schema 文件路径。</param>
+    /// <param name="propertyPath">对象字段路径。</param>
+    /// <param name="element">Schema 节点。</param>
+    /// <param name="keywordName">关键字名称。</param>
+    /// <returns>属性数量约束；未声明时返回空。</returns>
+    private static int? TryParseObjectPropertyCountConstraint(
+        string tableName,
+        string schemaPath,
+        string propertyPath,
+        JsonElement element,
+        string keywordName)
+    {
+        if (!element.TryGetProperty(keywordName, out var constraintElement))
+        {
+            return null;
+        }
+
+        if (constraintElement.ValueKind != JsonValueKind.Number ||
+            !constraintElement.TryGetInt32(out var constraintValue) ||
+            constraintValue < 0)
+        {
+            throw ConfigLoadExceptionFactory.Create(
+                ConfigLoadFailureKind.SchemaUnsupported,
+                tableName,
+                $"Property '{propertyPath}' in schema file '{schemaPath}' must declare '{keywordName}' as a non-negative integer.",
+                schemaPath: schemaPath,
+                displayPath: GetDiagnosticPath(propertyPath));
+        }
+
+        return constraintValue;
+    }
+
     /// <summary>
     ///     读取数组去重约束。
     /// </summary>
@@ -2201,17 +2344,24 @@ internal sealed class YamlConfigSchemaNode
     /// </summary>
     /// <param name="properties">对象属性集合。</param>
     /// <param name="requiredProperties">对象必填属性集合。</param>
+    /// <param name="objectConstraints">对象属性数量约束。</param>
     /// <param name="schemaPathHint">用于错误信息的 schema 文件路径提示。</param>
     /// <returns>对象节点模型。</returns>
     public static YamlConfigSchemaNode CreateObject(
         IReadOnlyDictionary<string, YamlConfigSchemaNode>? properties,
         IReadOnlyCollection<string>? requiredProperties,
+        YamlConfigObjectConstraints? objectConstraints,
         string schemaPathHint)
     {
         return new YamlConfigSchemaNode(
             YamlConfigSchemaPropertyType.Object,
             new NodeChildren(properties, requiredProperties, itemNode: null),
-            NodeValidation.None,
+            new NodeValidation(
+                referenceTableName: null,
+                allowedValues: null,
+                constraints: null,
+                arrayConstraints: null,
+                objectConstraints),
             schemaPathHint);
     }
 
@@ -2234,7 +2384,8 @@ internal sealed class YamlConfigSchemaNode
                 referenceTableName: null,
                 allowedValues: null,
                 constraints: null,
-                arrayConstraints),
+                arrayConstraints,
+                objectConstraints: null),
             schemaPathHint);
     }
 
@@ -2261,7 +2412,8 @@ internal sealed class YamlConfigSchemaNode
                 referenceTableName,
                 allowedValues,
                 constraints,
-                arrayConstraints: null),
+                arrayConstraints: null,
+                objectConstraints: null),
             schemaPathHint);
     }
 
@@ -2285,6 +2437,7 @@ internal sealed class YamlConfigSchemaNode
         AllowedValues = validation.AllowedValues;
         Constraints = validation.Constraints;
         ArrayConstraints = validation.ArrayConstraints;
+        ObjectConstraints = validation.ObjectConstraints;
         SchemaPathHint = schemaPathHint;
     }
 
@@ -2323,6 +2476,11 @@ internal sealed class YamlConfigSchemaNode
     /// </summary>
     public YamlConfigScalarConstraints? Constraints { get; }
 
+    /// <summary>
+    ///     获取对象属性数量约束；未声明时返回空。
+    /// </summary>
+    public YamlConfigObjectConstraints? ObjectConstraints { get; }
+
     /// <summary>
     ///     获取数组元素数量约束；未声明时返回空。
     /// </summary>
@@ -2376,18 +2534,21 @@ internal sealed class YamlConfigSchemaNode
             referenceTableName: null,
             allowedValues: null,
             constraints: null,
-            arrayConstraints: null);
+            arrayConstraints: null,
+            objectConstraints: null);
 
         public NodeValidation(
             string? referenceTableName,
             IReadOnlyCollection<string>? allowedValues,
             YamlConfigScalarConstraints? constraints,
-            YamlConfigArrayConstraints? arrayConstraints)
+            YamlConfigArrayConstraints? arrayConstraints,
+            YamlConfigObjectConstraints? objectConstraints)
         {
             ReferenceTableName = referenceTableName;
             AllowedValues = allowedValues;
             Constraints = constraints;
             ArrayConstraints = arrayConstraints;
+            ObjectConstraints = objectConstraints;
         }
 
         public string? ReferenceTableName { get; }
@@ -2398,13 +2559,44 @@ internal sealed class YamlConfigSchemaNode
 
         public YamlConfigArrayConstraints? ArrayConstraints { get; }
 
+        public YamlConfigObjectConstraints? ObjectConstraints { get; }
+
         public NodeValidation WithReferenceTable(string referenceTableName)
         {
-            return new NodeValidation(referenceTableName, AllowedValues, Constraints, ArrayConstraints);
+            return new NodeValidation(referenceTableName, AllowedValues, Constraints, ArrayConstraints,
+                ObjectConstraints);
         }
     }
 }
 
+/// <summary>
+///     表示一个对象节点上声明的属性数量约束。
+///     该模型将对象级约束与数组 / 标量约束拆开保存，避免运行时节点继续暴露无关成员。
+/// </summary>
+internal sealed class YamlConfigObjectConstraints
+{
+    /// <summary>
+    ///     初始化对象约束模型。
+    /// </summary>
+    /// <param name="minProperties">最小属性数量约束。</param>
+    /// <param name="maxProperties">最大属性数量约束。</param>
+    public YamlConfigObjectConstraints(int? minProperties, int? maxProperties)
+    {
+        MinProperties = minProperties;
+        MaxProperties = maxProperties;
+    }
+
+    /// <summary>
+    ///     获取最小属性数量约束。
+    /// </summary>
+    public int? MinProperties { get; }
+
+    /// <summary>
+    ///     获取最大属性数量约束。
+    /// </summary>
+    public int? MaxProperties { get; }
+}
+
 /// <summary>
 ///     聚合一个标量节点上声明的数值约束与字符串约束。
 ///     该包装层保留“标量字段有约束”的统一入口，同时把不同语义的约束分成更小的专用模型。
diff --git a/GFramework.SourceGenerators.Tests/Config/SchemaConfigGeneratorSnapshotTests.cs b/GFramework.SourceGenerators.Tests/Config/SchemaConfigGeneratorSnapshotTests.cs
index dc2a36b5..631740f9 100644
--- a/GFramework.SourceGenerators.Tests/Config/SchemaConfigGeneratorSnapshotTests.cs
+++ b/GFramework.SourceGenerators.Tests/Config/SchemaConfigGeneratorSnapshotTests.cs
@@ -69,6 +69,8 @@ public class SchemaConfigGeneratorSnapshotTests
                                 "title": "Monster Config",
                                 "description": "Represents one monster entry generated from schema metadata.",
                                 "type": "object",
+                                "minProperties": 4,
+                                "maxProperties": 8,
                                 "required": ["id", "name", "reward", "phases"],
                                 "properties": {
                                   "id": {
@@ -113,6 +115,8 @@ public class SchemaConfigGeneratorSnapshotTests
                                   "reward": {
                                     "type": "object",
                                     "description": "Reward payload.",
+                                    "minProperties": 2,
+                                    "maxProperties": 2,
                                     "required": ["gold", "currency"],
                                     "properties": {
                                       "gold": {
diff --git a/GFramework.SourceGenerators.Tests/Config/snapshots/SchemaConfigGenerator/MonsterConfig.g.txt b/GFramework.SourceGenerators.Tests/Config/snapshots/SchemaConfigGenerator/MonsterConfig.g.txt
index d5b5f909..c06078eb 100644
--- a/GFramework.SourceGenerators.Tests/Config/snapshots/SchemaConfigGenerator/MonsterConfig.g.txt
+++ b/GFramework.SourceGenerators.Tests/Config/snapshots/SchemaConfigGenerator/MonsterConfig.g.txt
@@ -7,6 +7,9 @@ namespace GFramework.Game.Config.Generated;
 ///     Auto-generated config type for schema file 'monster.schema.json'.
 ///     Represents one monster entry generated from schema metadata.
 /// </summary>
+/// <remarks>
+///     Constraints: minProperties = 4, maxProperties = 8.
+/// </remarks>
 public sealed partial class MonsterConfig
 {
     /// <summary>
@@ -74,6 +77,9 @@ public sealed partial class MonsterConfig
     ///     Auto-generated nested config type for schema property path 'reward'.
     ///     Reward payload.
     /// </summary>
+    /// <remarks>
+    ///     Constraints: minProperties = 2, maxProperties = 2.
+    /// </remarks>
     public sealed partial class RewardConfig
     {
         /// <summary>
@@ -124,4 +130,4 @@ public sealed partial class MonsterConfig
         public string MonsterId { get; set; } = string.Empty;
 
     }
-}
+}
\ No newline at end of file
diff --git a/GFramework.SourceGenerators/Config/SchemaConfigGenerator.cs b/GFramework.SourceGenerators/Config/SchemaConfigGenerator.cs
index 5890cc1f..9cf5d672 100644
--- a/GFramework.SourceGenerators/Config/SchemaConfigGenerator.cs
+++ b/GFramework.SourceGenerators/Config/SchemaConfigGenerator.cs
@@ -6,7 +6,8 @@ namespace GFramework.SourceGenerators.Config;
 ///     根据 AdditionalFiles 中的 JSON schema 生成配置类型和配置表包装。
 ///     当前实现聚焦 AI-First 配置系统共享的最小 schema 子集，
 ///     支持嵌套对象、对象数组、标量数组，以及可映射的 default / enum / ref-table 元数据。
-///     当前共享子集也会把 <c>multipleOf</c> 与 <c>uniqueItems</c> 写入生成代码文档，
+///     当前共享子集也会把 <c>multipleOf</c>、<c>uniqueItems</c>、
+///     <c>minProperties</c> 与 <c>maxProperties</c> 写入生成代码文档，
 ///     让消费者能直接在强类型 API 上看到运行时生效的约束。
 /// </summary>
 [Generator]
@@ -258,6 +259,7 @@ public sealed class SchemaConfigGenerator : IIncrementalGenerator
             className,
             TryGetMetadataString(element, "title"),
             TryGetMetadataString(element, "description"),
+            TryBuildConstraintDocumentation(element, "object"),
             properties));
     }
 
@@ -1876,6 +1878,14 @@ public sealed class SchemaConfigGenerator : IIncrementalGenerator
         }
 
         builder.AppendLine($"{indent}/// </summary>");
+        if (!string.IsNullOrWhiteSpace(objectSpec.ConstraintDocumentation))
+        {
+            builder.AppendLine($"{indent}/// <remarks>");
+            builder.AppendLine(
+                $"{indent}///     Constraints: {EscapeXmlDocumentation(objectSpec.ConstraintDocumentation!)}.");
+            builder.AppendLine($"{indent}/// </remarks>");
+        }
+
         builder.AppendLine($"{indent}public sealed partial class {objectSpec.ClassName}");
         builder.AppendLine($"{indent}{{");
 
@@ -2432,7 +2442,7 @@ public sealed class SchemaConfigGenerator : IIncrementalGenerator
     }
 
     /// <summary>
-    ///     将 shared schema 子集中的范围、步进、长度、模式与数组数量 / 去重约束整理成 XML 文档可读字符串。
+    ///     将 shared schema 子集中的范围、步进、长度、数组数量 / 去重与对象属性数量约束整理成 XML 文档可读字符串。
     /// </summary>
     /// <param name="element">Schema 节点。</param>
     /// <param name="schemaType">标量类型。</param>
@@ -2510,6 +2520,18 @@ public sealed class SchemaConfigGenerator : IIncrementalGenerator
             parts.Add("uniqueItems = true");
         }
 
+        if (schemaType == "object" &&
+            TryGetNonNegativeInt32(element, "minProperties", out var minProperties))
+        {
+            parts.Add($"minProperties = {minProperties.ToString(CultureInfo.InvariantCulture)}");
+        }
+
+        if (schemaType == "object" &&
+            TryGetNonNegativeInt32(element, "maxProperties", out var maxProperties))
+        {
+            parts.Add($"maxProperties = {maxProperties.ToString(CultureInfo.InvariantCulture)}");
+        }
+
         return parts.Count > 0 ? string.Join(", ", parts) : null;
     }
 
@@ -2654,12 +2676,14 @@ public sealed class SchemaConfigGenerator : IIncrementalGenerator
     /// <param name="ClassName">要生成的 CLR 类型名。</param>
     /// <param name="Title">对象标题元数据。</param>
     /// <param name="Description">对象描述元数据。</param>
+    /// <param name="ConstraintDocumentation">对象约束说明。</param>
     /// <param name="Properties">对象属性集合。</param>
     private sealed record SchemaObjectSpec(
         string DisplayPath,
         string ClassName,
         string? Title,
         string? Description,
+        string? ConstraintDocumentation,
         IReadOnlyList<SchemaPropertySpec> Properties);
 
     /// <summary>
diff --git a/docs/zh-CN/game/config-system.md b/docs/zh-CN/game/config-system.md
index e156bfd2..809bb205 100644
--- a/docs/zh-CN/game/config-system.md
+++ b/docs/zh-CN/game/config-system.md
@@ -12,7 +12,7 @@
 - JSON Schema 作为结构描述
 - 一对象一文件的目录组织
 - 运行时只读查询
-- Runtime / Generator / Tooling 共享支持 `minimum`、`maximum`、`exclusiveMinimum`、`exclusiveMaximum`、`multipleOf`、`minLength`、`maxLength`、`pattern`、`minItems`、`maxItems`、`uniqueItems`
+- Runtime / Generator / Tooling 共享支持 `minimum`、`maximum`、`exclusiveMinimum`、`exclusiveMaximum`、`multipleOf`、`minLength`、`maxLength`、`pattern`、`minItems`、`maxItems`、`uniqueItems`、`minProperties`、`maxProperties`
 - Source Generator 生成配置类型、表包装、单表注册/访问辅助，以及项目级聚合注册目录
 - VS Code 插件提供配置浏览、raw 编辑、schema 打开、递归轻量校验和嵌套对象表单入口
 
@@ -657,6 +657,7 @@ var loader = new YamlConfigLoader("config-root")
 - 字符串字段违反 `pattern`
 - 数组字段违反 `minItems` / `maxItems`
 - 数组字段违反 `uniqueItems`
+- 对象字段违反 `minProperties` / `maxProperties`
 - 标量 `enum` 不匹配
 - 标量数组元素 `enum` 不匹配
 - 通过 `x-gframework-ref-table` 声明的跨表引用缺失目标行
@@ -711,6 +712,7 @@ if (MonsterConfigBindings.References.TryGetByDisplayPath("dropItems", out var re
 - `pattern`：供运行时校验、VS Code 校验、表单提示和生成代码 XML 文档复用；当前按 C# `CultureInvariant` 与 JS Unicode `u` 模式解释，非法模式会在 schema 解析阶段直接报错
 - `minItems` / `maxItems`：供运行时校验、VS Code 校验、表单提示和生成代码 XML 文档复用
 - `uniqueItems`：供运行时校验、VS Code 校验、表单 hint 和生成代码 XML 文档复用；对象数组会按 schema 归一化后的结构比较重复项，而不是依赖 YAML 字段顺序
+- `minProperties` / `maxProperties`：供运行时校验、VS Code 校验、对象 section 表单 hint 和生成代码 XML 文档复用；根对象与嵌套对象都会按实际属性数量执行同一套约束
 
 这样可以避免错误配置被默认值或 `IgnoreUnmatchedProperties` 静默吞掉。
 
@@ -807,7 +809,7 @@ var hotReload = loader.EnableHotReload(
 - 对带 `x-gframework-ref-table` 的字段提供引用 schema / 配置域 / 引用文件跳转入口
 - 对空配置文件提供基于 schema 的示例 YAML 初始化入口
 - 对同一配置域内的多份 YAML 文件执行批量字段更新
-- 在表单入口中显示 `title / description / default / enum / ref-table / multipleOf / uniqueItems` 元数据；批量编辑入口当前只暴露顶层可批量改写字段所需的基础信息
+- 在表单入口中显示 `title / description / default / enum / ref-table / multipleOf / uniqueItems / minProperties / maxProperties` 元数据；批量编辑入口当前只暴露顶层可批量改写字段所需的基础信息
 
 当前表单入口适合编辑嵌套对象中的标量字段、标量数组，以及对象数组中的对象项。
 
diff --git a/tools/gframework-config-tool/src/configValidation.js b/tools/gframework-config-tool/src/configValidation.js
index 39dc7786..9c339f17 100644
--- a/tools/gframework-config-tool/src/configValidation.js
+++ b/tools/gframework-config-tool/src/configValidation.js
@@ -20,7 +20,9 @@ const BooleanScalarPattern = /^(true|false)$/iu;
  * @returns {{
  *   type: "object",
  *   required: string[],
- *   properties: Record<string, SchemaNode>
+ *   properties: Record<string, SchemaNode>,
+ *   minProperties?: number,
+ *   maxProperties?: number
  * }} Parsed schema info.
  */
 function parseSchemaContent(content) {
@@ -639,6 +641,8 @@ function parseSchemaNode(rawNode, displayPath) {
         patternRegex: patternMetadata ? patternMetadata.regex : undefined,
         minItems: normalizeSchemaNonNegativeInteger(value.minItems),
         maxItems: normalizeSchemaNonNegativeInteger(value.maxItems),
+        minProperties: normalizeSchemaNonNegativeInteger(value.minProperties),
+        maxProperties: normalizeSchemaNonNegativeInteger(value.maxProperties),
         uniqueItems: normalizeSchemaBoolean(value.uniqueItems),
         refTable: typeof value["x-gframework-ref-table"] === "string"
             ? value["x-gframework-ref-table"]
@@ -659,6 +663,8 @@ function parseSchemaNode(rawNode, displayPath) {
             displayPath,
             required,
             properties,
+            minProperties: metadata.minProperties,
+            maxProperties: metadata.maxProperties,
             title: metadata.title,
             description: metadata.description,
             defaultValue: metadata.defaultValue
@@ -969,6 +975,8 @@ function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, loca
         return;
     }
 
+    const propertyCount = Array.isArray(yamlNode.entries) ? yamlNode.entries.length : 0;
+
     for (const requiredProperty of schemaNode.required) {
         if (!yamlNode.map.has(requiredProperty)) {
             diagnostics.push({
@@ -998,6 +1006,28 @@ function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, loca
             diagnostics,
             localizer);
     }
+
+    if (typeof schemaNode.minProperties === "number" &&
+        propertyCount < schemaNode.minProperties) {
+        diagnostics.push({
+            severity: "error",
+            message: localizeValidationMessage(ValidationMessageKeys.minPropertiesViolation, localizer, {
+                displayPath,
+                value: String(schemaNode.minProperties)
+            })
+        });
+    }
+
+    if (typeof schemaNode.maxProperties === "number" &&
+        propertyCount > schemaNode.maxProperties) {
+        diagnostics.push({
+            severity: "error",
+            message: localizeValidationMessage(ValidationMessageKeys.maxPropertiesViolation, localizer, {
+                displayPath,
+                value: String(schemaNode.maxProperties)
+            })
+        });
+    }
 }
 
 /**
@@ -1060,6 +1090,22 @@ function buildComparableNodeValue(schemaNode, yamlNode) {
  * @returns {string} Localized validation message.
  */
 function localizeValidationMessage(key, localizer, params) {
+    if (key === ValidationMessageKeys.minPropertiesViolation) {
+        return formatObjectPropertyCountMessage(
+            params.displayPath,
+            params.value,
+            "min",
+            Boolean(localizer && localizer.isChinese));
+    }
+
+    if (key === ValidationMessageKeys.maxPropertiesViolation) {
+        return formatObjectPropertyCountMessage(
+            params.displayPath,
+            params.value,
+            "max",
+            Boolean(localizer && localizer.isChinese));
+    }
+
     if (localizer && typeof localizer.t === "function") {
         return localizer.t(key, params);
     }
@@ -1084,6 +1130,8 @@ function localizeValidationMessage(key, localizer, params) {
                 return `属性“${params.displayPath}”最多只能包含 ${params.value} 个元素。`;
             case ValidationMessageKeys.maxLengthViolation:
                 return `属性“${params.displayPath}”长度必须不超过 ${params.value} 个字符。`;
+            case ValidationMessageKeys.maxPropertiesViolation:
+                return formatObjectPropertyCountMessage(params.displayPath, params.value, "max", true);
             case ValidationMessageKeys.minimumViolation:
                 return `属性“${params.displayPath}”必须大于或等于 ${params.value}。`;
             case ValidationMessageKeys.multipleOfViolation:
@@ -1092,6 +1140,8 @@ function localizeValidationMessage(key, localizer, params) {
                 return `属性“${params.displayPath}”至少需要包含 ${params.value} 个元素。`;
             case ValidationMessageKeys.minLengthViolation:
                 return `属性“${params.displayPath}”长度必须至少为 ${params.value} 个字符。`;
+            case ValidationMessageKeys.minPropertiesViolation:
+                return formatObjectPropertyCountMessage(params.displayPath, params.value, "min", true);
             case ValidationMessageKeys.patternViolation:
                 return `属性“${params.displayPath}”必须匹配正则模式“${params.value}”。`;
             case ValidationMessageKeys.uniqueItemsViolation:
@@ -1126,6 +1176,8 @@ function localizeValidationMessage(key, localizer, params) {
             return `Property '${params.displayPath}' must contain at most ${params.value} items.`;
         case ValidationMessageKeys.maxLengthViolation:
             return `Property '${params.displayPath}' must be at most ${params.value} characters long.`;
+        case ValidationMessageKeys.maxPropertiesViolation:
+            return formatObjectPropertyCountMessage(params.displayPath, params.value, "max", false);
         case ValidationMessageKeys.minimumViolation:
             return `Property '${params.displayPath}' must be greater than or equal to ${params.value}.`;
         case ValidationMessageKeys.multipleOfViolation:
@@ -1134,6 +1186,8 @@ function localizeValidationMessage(key, localizer, params) {
             return `Property '${params.displayPath}' must contain at least ${params.value} items.`;
         case ValidationMessageKeys.minLengthViolation:
             return `Property '${params.displayPath}' must be at least ${params.value} characters long.`;
+        case ValidationMessageKeys.minPropertiesViolation:
+            return formatObjectPropertyCountMessage(params.displayPath, params.value, "min", false);
         case ValidationMessageKeys.patternViolation:
             return `Property '${params.displayPath}' must match pattern '${params.value}'.`;
         case ValidationMessageKeys.uniqueItemsViolation:
@@ -1149,6 +1203,40 @@ function localizeValidationMessage(key, localizer, params) {
     }
 }
 
+/**
+ * Format one object-property-count validation message.
+ *
+ * @param {string} displayPath Logical object path, or empty for the root object.
+ * @param {string} value Constraint value.
+ * @param {"min" | "max"} mode Whether the message describes a minimum or maximum.
+ * @param {boolean} isChinese Whether Chinese text should be produced.
+ * @returns {string} Formatted message.
+ */
+function formatObjectPropertyCountMessage(displayPath, value, mode, isChinese) {
+    const isRoot = !displayPath;
+    if (isChinese) {
+        if (mode === "min") {
+            return isRoot
+                ? `根对象至少需要包含 ${value} 个属性。`
+                : `对象属性“${displayPath}”至少需要包含 ${value} 个子属性。`;
+        }
+
+        return isRoot
+            ? `根对象最多只能包含 ${value} 个属性。`
+            : `对象属性“${displayPath}”最多只能包含 ${value} 个子属性。`;
+    }
+
+    if (mode === "min") {
+        return isRoot
+            ? `Root object must contain at least ${value} properties.`
+            : `Property '${displayPath}' must contain at least ${value} properties.`;
+    }
+
+    return isRoot
+        ? `Root object must contain at most ${value} properties.`
+        : `Property '${displayPath}' must contain at most ${value} properties.`;
+}
+
 /**
  * Tokenize YAML lines into indentation-aware units.
  *
@@ -1782,6 +1870,8 @@ module.exports = {
  *   displayPath: string,
  *   required: string[],
  *   properties: Record<string, SchemaNode>,
+ *   minProperties?: number,
+ *   maxProperties?: number,
  *   title?: string,
  *   description?: string,
  *   defaultValue?: string
diff --git a/tools/gframework-config-tool/src/extension.js b/tools/gframework-config-tool/src/extension.js
index c78c8aa4..02519140 100644
--- a/tools/gframework-config-tool/src/extension.js
+++ b/tools/gframework-config-tool/src/extension.js
@@ -1095,6 +1095,7 @@ function renderFormField(field) {
                 <div class="meta-key">${escapeHtml(field.displayPath || field.path)}</div>
                 ${renderYamlCommentBlock(field)}
                 ${field.description ? `<span class="hint">${escapeHtml(field.description)}</span>` : ""}
+                ${field.schema ? renderFieldHint(field.schema, false, false) : ""}
                 ${renderCommentEditor(field)}
             </div>
         `;
@@ -1302,6 +1303,7 @@ function collectFormFields(schemaNode, yamlNode, currentPath, depth, fields, uns
                 path: propertyPath,
                 label,
                 description: propertySchema.description,
+                schema: propertySchema,
                 comment: commentLookup[propertyPath] || "",
                 required: requiredSet.has(key),
                 depth
@@ -1468,6 +1470,7 @@ function collectObjectArrayItemFields(schemaNode, yamlNode, localPath, displayPa
                 displayPath: itemDisplayPath,
                 label,
                 description: propertySchema.description,
+                schema: propertySchema,
                 comment: commentLookup[itemDisplayPath] || "",
                 required: requiredSet.has(key),
                 depth
@@ -1574,14 +1577,15 @@ function getScalarArrayValue(yamlNode) {
 /**
  * Render human-facing metadata hints for one schema field.
  *
- * @param {{description?: string, defaultValue?: string, minimum?: number, exclusiveMinimum?: number, maximum?: number, exclusiveMaximum?: number, multipleOf?: number, minLength?: number, maxLength?: number, pattern?: string, minItems?: number, maxItems?: number, uniqueItems?: boolean, enumValues?: string[], items?: {enumValues?: string[], minimum?: number, exclusiveMinimum?: number, maximum?: number, exclusiveMaximum?: number, multipleOf?: number, minLength?: number, maxLength?: number, pattern?: string}, refTable?: string}} propertySchema Property schema metadata.
+ * @param {{type?: string, description?: string, defaultValue?: string, minimum?: number, exclusiveMinimum?: number, maximum?: number, exclusiveMaximum?: number, multipleOf?: number, minLength?: number, maxLength?: number, pattern?: string, minItems?: number, maxItems?: number, minProperties?: number, maxProperties?: number, uniqueItems?: boolean, enumValues?: string[], items?: {enumValues?: string[], minimum?: number, exclusiveMinimum?: number, maximum?: number, exclusiveMaximum?: number, multipleOf?: number, minLength?: number, maxLength?: number, pattern?: string}, refTable?: string}} propertySchema Property schema metadata.
  * @param {boolean} isArrayField Whether the field is an array.
+ * @param {boolean} includeDescription Whether description text should be included in the hint output.
  * @returns {string} HTML fragment.
  */
-function renderFieldHint(propertySchema, isArrayField) {
+function renderFieldHint(propertySchema, isArrayField, includeDescription = true) {
     const hints = [];
 
-    if (propertySchema.description) {
+    if (includeDescription && propertySchema.description) {
         hints.push(escapeHtml(propertySchema.description));
     }
 
@@ -1630,6 +1634,14 @@ function renderFieldHint(propertySchema, isArrayField) {
         hints.push(escapeHtml(localizer.t("webview.hint.pattern", {value: propertySchema.pattern})));
     }
 
+    if (propertySchema.type === "object" && typeof propertySchema.minProperties === "number") {
+        hints.push(escapeHtml(localizer.t("webview.hint.minProperties", {value: propertySchema.minProperties})));
+    }
+
+    if (propertySchema.type === "object" && typeof propertySchema.maxProperties === "number") {
+        hints.push(escapeHtml(localizer.t("webview.hint.maxProperties", {value: propertySchema.maxProperties})));
+    }
+
     if (isArrayField && typeof propertySchema.minItems === "number") {
         hints.push(escapeHtml(localizer.t("webview.hint.minItems", {value: propertySchema.minItems})));
     }
diff --git a/tools/gframework-config-tool/src/localization.js b/tools/gframework-config-tool/src/localization.js
index f58bddf2..23aaf326 100644
--- a/tools/gframework-config-tool/src/localization.js
+++ b/tools/gframework-config-tool/src/localization.js
@@ -124,6 +124,8 @@ const enMessages = {
     "webview.hint.itemMinLength": "Item min length: {value}",
     "webview.hint.itemMaxLength": "Item max length: {value}",
     "webview.hint.itemPattern": "Item pattern: {value}",
+    "webview.hint.minProperties": "Min properties: {value}",
+    "webview.hint.maxProperties": "Max properties: {value}",
     "webview.hint.refTable": "Ref table: {refTable}",
     "webview.unsupported.array": "Unsupported array shapes are currently raw-YAML-only in the form preview.",
     "webview.unsupported.type": "{type} fields are currently raw-YAML-only.",
@@ -134,10 +136,12 @@ const enMessages = {
     [ValidationMessageKeys.maximumViolation]: "Property '{displayPath}' must be less than or equal to {value}.",
     [ValidationMessageKeys.maxItemsViolation]: "Property '{displayPath}' must contain at most {value} items.",
     [ValidationMessageKeys.maxLengthViolation]: "Property '{displayPath}' must be at most {value} characters long.",
+    [ValidationMessageKeys.maxPropertiesViolation]: "Property '{displayPath}' must contain at most {value} properties.",
     [ValidationMessageKeys.minimumViolation]: "Property '{displayPath}' must be greater than or equal to {value}.",
     [ValidationMessageKeys.multipleOfViolation]: "Property '{displayPath}' must be a multiple of {value}.",
     [ValidationMessageKeys.minItemsViolation]: "Property '{displayPath}' must contain at least {value} items.",
     [ValidationMessageKeys.minLengthViolation]: "Property '{displayPath}' must be at least {value} characters long.",
+    [ValidationMessageKeys.minPropertiesViolation]: "Property '{displayPath}' must contain at least {value} properties.",
     [ValidationMessageKeys.patternViolation]: "Property '{displayPath}' must match pattern '{value}'.",
     [ValidationMessageKeys.uniqueItemsViolation]: "Property '{displayPath}' duplicates earlier array item '{duplicatePath}', but uniqueItems is required.",
     [ValidationMessageKeys.enumMismatch]: "Property '{displayPath}' must be one of: {values}.",
@@ -228,6 +232,8 @@ const zhCnMessages = {
     "webview.hint.itemMinLength": "元素最小长度：{value}",
     "webview.hint.itemMaxLength": "元素最大长度：{value}",
     "webview.hint.itemPattern": "元素正则模式：{value}",
+    "webview.hint.minProperties": "最少属性数：{value}",
+    "webview.hint.maxProperties": "最多属性数：{value}",
     "webview.hint.refTable": "引用表：{refTable}",
     "webview.unsupported.array": "当前表单预览暂不支持这种数组结构，请改用原始 YAML。",
     "webview.unsupported.type": "当前表单预览暂不支持 {type} 字段，请改用原始 YAML。",
@@ -238,10 +244,12 @@ const zhCnMessages = {
     [ValidationMessageKeys.maximumViolation]: "属性“{displayPath}”必须小于或等于 {value}。",
     [ValidationMessageKeys.maxItemsViolation]: "属性“{displayPath}”最多只能包含 {value} 个元素。",
     [ValidationMessageKeys.maxLengthViolation]: "属性“{displayPath}”长度必须不超过 {value} 个字符。",
+    [ValidationMessageKeys.maxPropertiesViolation]: "对象属性“{displayPath}”最多只能包含 {value} 个子属性。",
     [ValidationMessageKeys.minimumViolation]: "属性“{displayPath}”必须大于或等于 {value}。",
     [ValidationMessageKeys.multipleOfViolation]: "属性“{displayPath}”必须是 {value} 的整数倍。",
     [ValidationMessageKeys.minItemsViolation]: "属性“{displayPath}”至少需要包含 {value} 个元素。",
     [ValidationMessageKeys.minLengthViolation]: "属性“{displayPath}”长度必须至少为 {value} 个字符。",
+    [ValidationMessageKeys.minPropertiesViolation]: "对象属性“{displayPath}”至少需要包含 {value} 个子属性。",
     [ValidationMessageKeys.patternViolation]: "属性“{displayPath}”必须匹配正则模式“{value}”。",
     [ValidationMessageKeys.uniqueItemsViolation]: "属性“{displayPath}”与更早的数组元素“{duplicatePath}”重复；该数组要求元素唯一。",
     [ValidationMessageKeys.enumMismatch]: "属性“{displayPath}”必须是以下值之一：{values}。",
diff --git a/tools/gframework-config-tool/src/localizationKeys.js b/tools/gframework-config-tool/src/localizationKeys.js
index 3e315ff9..622743ce 100644
--- a/tools/gframework-config-tool/src/localizationKeys.js
+++ b/tools/gframework-config-tool/src/localizationKeys.js
@@ -9,10 +9,12 @@ const ValidationMessageKeys = Object.freeze({
     maximumViolation: "validation.maximumViolation",
     maxItemsViolation: "validation.maxItemsViolation",
     maxLengthViolation: "validation.maxLengthViolation",
+    maxPropertiesViolation: "validation.maxPropertiesViolation",
     minimumViolation: "validation.minimumViolation",
     multipleOfViolation: "validation.multipleOfViolation",
     minItemsViolation: "validation.minItemsViolation",
     minLengthViolation: "validation.minLengthViolation",
+    minPropertiesViolation: "validation.minPropertiesViolation",
     missingRequired: "validation.missingRequired",
     patternViolation: "validation.patternViolation",
     uniqueItemsViolation: "validation.uniqueItemsViolation",
diff --git a/tools/gframework-config-tool/test/configValidation.test.js b/tools/gframework-config-tool/test/configValidation.test.js
index 3b793650..e8b1518e 100644
--- a/tools/gframework-config-tool/test/configValidation.test.js
+++ b/tools/gframework-config-tool/test/configValidation.test.js
@@ -308,6 +308,41 @@ tags:
     assert.match(diagnostics[1].message, /at most 3 items|最多只能包含 3 个元素/u);
 });
 
+test("validateParsedConfig should report object property-count mismatches", () => {
+    const schema = parseSchemaContent(`
+        {
+          "type": "object",
+          "minProperties": 2,
+          "maxProperties": 3,
+          "properties": {
+            "reward": {
+              "type": "object",
+              "minProperties": 2,
+              "maxProperties": 2,
+              "properties": {
+                "gold": { "type": "integer" },
+                "currency": { "type": "string" },
+                "tier": { "type": "string" }
+              }
+            }
+          }
+        }
+    `);
+    const yaml = parseTopLevelYaml(`
+reward:
+  gold: 10
+  currency: coin
+  tier: epic
+`);
+
+    const diagnostics = validateParsedConfig(schema, yaml);
+    const messages = diagnostics.map((diagnostic) => diagnostic.message);
+
+    assert.equal(diagnostics.length, 2);
+    assert.ok(messages.some((message) => /at least 2 properties|至少需要包含 2 个属性/u.test(message)));
+    assert.ok(messages.some((message) => /reward.*at most 2 properties|reward.*最多只能包含 2 个子属性/u.test(message)));
+});
+
 test("validateParsedConfig should report multipleOf and uniqueItems violations", () => {
     const schema = parseSchemaContent(`
         {
@@ -615,6 +650,31 @@ test("parseSchemaContent should capture multipleOf and uniqueItems metadata", ()
     assert.equal(schema.properties.dropRates.items.multipleOf, 0.5);
 });
 
+test("parseSchemaContent should capture object property-count metadata", () => {
+    const schema = parseSchemaContent(`
+        {
+          "type": "object",
+          "minProperties": 2,
+          "maxProperties": 4,
+          "properties": {
+            "reward": {
+              "type": "object",
+              "minProperties": 1,
+              "maxProperties": 2,
+              "properties": {
+                "gold": { "type": "integer" }
+              }
+            }
+          }
+        }
+    `);
+
+    assert.equal(schema.minProperties, 2);
+    assert.equal(schema.maxProperties, 4);
+    assert.equal(schema.properties.reward.minProperties, 1);
+    assert.equal(schema.properties.reward.maxProperties, 2);
+});
+
 test("parseSchemaContent should reject invalid pattern declarations instead of dropping them", () => {
     assert.throws(
         () => parseSchemaContent(`