diff --git a/GFramework.Core/architecture/Architecture.cs b/GFramework.Core/architecture/Architecture.cs
index ccf779c..c861df5 100644
--- a/GFramework.Core/architecture/Architecture.cs
+++ b/GFramework.Core/architecture/Architecture.cs
@@ -144,7 +144,7 @@ public abstract class Architecture<T> : IArchitecture where T : Architecture<T>,
     /// </summary>
     /// <typeparam name="TSystem">目标系统类型</typeparam>
     /// <returns>对应的系统实例</returns>
-    public TSystem GetSystem<TSystem>() where TSystem : class, ISystem
+    public TSystem? GetSystem<TSystem>() where TSystem : class, ISystem
     {
         return _mContainer.Get<TSystem>();
     }
@@ -154,7 +154,7 @@ public abstract class Architecture<T> : IArchitecture where T : Architecture<T>,
     /// </summary>
     /// <typeparam name="TModel">目标模型类型</typeparam>
     /// <returns>对应的模型实例</returns>
-    public TModel GetModel<TModel>() where TModel : class, IModel
+    public TModel? GetModel<TModel>() where TModel : class, IModel
     {
         return _mContainer.Get<TModel>();
     }
@@ -164,7 +164,7 @@ public abstract class Architecture<T> : IArchitecture where T : Architecture<T>,
     /// </summary>
     /// <typeparam name="TUtility">目标工具类型</typeparam>
     /// <returns>对应的工具实例</returns>
-    public TUtility GetUtility<TUtility>() where TUtility : class, IUtility
+    public TUtility? GetUtility<TUtility>() where TUtility : class, IUtility
     {
         return _mContainer.Get<TUtility>();
     }
diff --git a/GFramework.Core/architecture/IArchitecture.cs b/GFramework.Core/architecture/IArchitecture.cs
index dd5c54d..1cf1586 100644
--- a/GFramework.Core/architecture/IArchitecture.cs
+++ b/GFramework.Core/architecture/IArchitecture.cs
@@ -39,21 +39,21 @@ public interface IArchitecture
     /// </summary>
     /// <typeparam name="T">系统类型，必须是class且实现ISystem接口</typeparam>
     /// <returns>指定类型的系统实例</returns>
-    T GetSystem<T>() where T : class, ISystem;
+    T? GetSystem<T>() where T : class, ISystem;
 
     /// <summary>
     ///     从架构中获取指定类型的模型实例
     /// </summary>
     /// <typeparam name="T">模型类型，必须是class且实现IModel接口</typeparam>
     /// <returns>指定类型的模型实例</returns>
-    T GetModel<T>() where T : class, IModel;
+    T? GetModel<T>() where T : class, IModel;
 
     /// <summary>
     ///     从架构中获取指定类型的工具实例
     /// </summary>
     /// <typeparam name="T">工具类型，必须是class且实现IUtility接口</typeparam>
     /// <returns>指定类型的工具实例</returns>
-    T GetUtility<T>() where T : class, IUtility;
+    T? GetUtility<T>() where T : class, IUtility;
 
     /// <summary>
     ///     发送并执行指定的命令