diff --git a/GFramework.Core/coroutine/extensions/CommandCoroutineExtensions.cs b/GFramework.Core/coroutine/extensions/CommandCoroutineExtensions.cs
index a919458..62183ca 100644
--- a/GFramework.Core/coroutine/extensions/CommandCoroutineExtensions.cs
+++ b/GFramework.Core/coroutine/extensions/CommandCoroutineExtensions.cs
@@ -43,19 +43,30 @@ public static class CommandCoroutineExtensions
 
         yield return task.AsCoroutineInstruction();
 
-        if (task.IsFaulted) onError?.Invoke(task.Exception!);
+        if (!task.IsFaulted) yield break;
+        if (onError != null)
+            onError.Invoke(task.Exception!);
+        else
+            throw task.Exception!.InnerException ?? task.Exception;
     }
 
     /// <summary>
-    ///     发送 Command 并等待指定 Event
+    /// 发送 Command 并等待指定 Event。
     /// </summary>
-    /// <typeparam name="TCommand">命令类型，必须实现 IAsyncCommand 接口</typeparam>
+    /// <typeparam name="TCommand">命令类型，必须实现 IAsyncCommand</typeparam>
     /// <typeparam name="TEvent">事件类型</typeparam>
     /// <param name="contextAware">上下文感知对象</param>
     /// <param name="command">要执行的命令实例</param>
     /// <param name="onEvent">事件触发时的回调处理</param>
-    /// <param name="timeout">等待超时时间（秒），0表示无限等待</param>
-    /// <returns>返回协程指令枚举器</returns>
+    /// <param name="timeout">
+    /// 超时时间（秒）:
+    /// <list type="bullet">
+    /// <item><description>timeout &lt; 0: 无效，将抛出 ArgumentOutOfRangeException</description></item>
+    /// <item><description>timeout == 0: 无超时，永久等待</description></item>
+    /// <item><description>timeout &gt; 0: 启用超时机制</description></item>
+    /// </list>
+    /// </param>
+    /// <exception cref="ArgumentOutOfRangeException">当 timeout 小于 0 时抛出。</exception>
     public static IEnumerator<IYieldInstruction> SendCommandAndWaitEventCoroutine<TCommand, TEvent>(
         this IContextAware contextAware,
         TCommand command,
@@ -63,44 +74,64 @@ public static class CommandCoroutineExtensions
         float timeout = 0f)
         where TCommand : IAsyncCommand
         where TEvent : class
+    {
+        // 参数检查部分
+        if (timeout < 0f)
+            throw new ArgumentOutOfRangeException(
+                nameof(timeout),
+                timeout,
+                "Timeout must be greater than or equal to 0.");
+
+        // 迭代器逻辑部分
+        return SendCommandAndWaitEventIterator(contextAware, command, onEvent, timeout);
+    }
+
+    /// <summary>
+    /// 发送 Command 并等待指定 Event 的迭代器实现。
+    /// </summary>
+    private static IEnumerator<IYieldInstruction> SendCommandAndWaitEventIterator<TCommand, TEvent>(
+        IContextAware contextAware,
+        TCommand command,
+        Action<TEvent>? onEvent,
+        float timeout)
+        where TCommand : IAsyncCommand
+        where TEvent : class
     {
         var context = contextAware.GetContext();
-        var eventBus = context.GetService<IEventBus>()!;
+        var eventBus = context.GetService<IEventBus>()
+                       ?? throw new InvalidOperationException("IEventBus not found.");
 
         WaitForEvent<TEvent>? wait = null;
 
         try
         {
-            // 先注册事件监听器
+            // 先注册事件监听
             wait = new WaitForEvent<TEvent>(eventBus);
 
-            // 发送异步命令并等待完成
+            // 发送命令
             var task = context.SendCommandAsync(command);
             yield return task.AsCoroutineInstruction();
 
-            // 如果有超时设置，使用超时等待
+            // 等待事件
             if (timeout > 0f)
             {
                 var timeoutWait = new WaitForEventWithTimeout<TEvent>(wait, timeout);
                 yield return timeoutWait;
 
-                // 检查是否超时
                 if (timeoutWait.IsTimeout)
-                    // 超时处理
-                    throw new TimeoutException($"wait for the event ${typeof(TEvent).Name} timeout.");
+                    throw new TimeoutException(
+                        $"Wait for event {typeof(TEvent).Name} timeout.");
             }
             else
             {
-                // 等待事件触发（无超时）
                 yield return wait;
             }
 
-            // 调用事件回调
-            if (onEvent != null && wait.EventData != null) onEvent.Invoke(wait.EventData);
+            if (wait.EventData != null)
+                onEvent?.Invoke(wait.EventData);
         }
         finally
         {
-            // 确保清理事件监听器
             wait?.Dispose();
         }
     }
diff --git a/GFramework.Core/coroutine/extensions/MediatorCoroutineExtensions.cs b/GFramework.Core/coroutine/extensions/MediatorCoroutineExtensions.cs
index 046964f..edbf02a 100644
--- a/GFramework.Core/coroutine/extensions/MediatorCoroutineExtensions.cs
+++ b/GFramework.Core/coroutine/extensions/MediatorCoroutineExtensions.cs
@@ -1,4 +1,4 @@
-// Copyright (c) 2026 GeWuYou
+// Copyright (c) 2026 GeWuYou
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -47,20 +47,31 @@ public static class MediatorCoroutineExtensions
 
         yield return task.AsCoroutineInstruction();
 
-        if (task.IsFaulted)
-            onError?.Invoke(task.Exception!);
+        if (!task.IsFaulted) yield break;
+        if (onError != null)
+            onError.Invoke(task.Exception!);
+        else
+            throw task.Exception!.InnerException ?? task.Exception;
     }
 
+    // ... existing code ...
     /// <summary>
-    /// 发送命令并等待特定事件的协程实现，支持超时控制。
+    /// 发送命令并等待特定事件的协程实现。
     /// </summary>
-    /// <typeparam name="TCommand">命令的类型</typeparam>
+    /// <typeparam name="TCommand">命令类型</typeparam>
     /// <typeparam name="TEvent">要等待的事件类型</typeparam>
-    /// <param name="contextAware">上下文感知对象，用于获取服务</param>
-    /// <param name="command">要发送的命令对象</param>
-    /// <param name="onEvent">接收到事件时的回调处理函数</param>
-    /// <param name="timeout">超时时间（秒），0表示无超时</param>
-    /// <returns>协程枚举器，用于协程执行</returns>
+    /// <param name="contextAware">上下文对象</param>
+    /// <param name="command">要发送的命令</param>
+    /// <param name="onEvent">事件触发时的回调</param>
+    /// <param name="timeout">
+    /// 超时时间（秒）:
+    /// <list type="bullet">
+    /// <item><description>timeout &lt; 0: 无效，将抛出 ArgumentOutOfRangeException</description></item>
+    /// <item><description>timeout == 0: 无超时，永久等待</description></item>
+    /// <item><description>timeout &gt; 0: 启用超时机制</description></item>
+    /// </list>
+    /// </param>
+    /// <exception cref="ArgumentOutOfRangeException">当 timeout 小于 0 时抛出。</exception>
     public static IEnumerator<IYieldInstruction> SendCommandAndWaitEventCoroutine<TCommand, TEvent>(
         this IContextAware contextAware,
         TCommand command,
@@ -69,10 +80,54 @@ public static class MediatorCoroutineExtensions
         where TCommand : notnull
         where TEvent : class
     {
-        var context = contextAware.GetContext();
-        var mediator = context.GetService<IMediator>()!;
-        var eventBus = context.GetService<IEventBus>()!;
+        // 参数验证
+        ValidateParameters(timeout);
 
+        // 获取必要的服务
+        var context = contextAware.GetContext();
+        var mediator = context.GetService<IMediator>()
+                       ?? throw new InvalidOperationException("IMediator not found.");
+        var eventBus = context.GetService<IEventBus>()
+                       ?? throw new InvalidOperationException("IEventBus not found.");
+
+        // 执行协程逻辑
+        return ExecuteSendCommandAndWaitEventCoroutine(mediator, eventBus, command, onEvent, timeout);
+    }
+
+    /// <summary>
+    /// 验证方法参数的有效性。
+    /// </summary>
+    /// <param name="timeout">超时时间</param>
+    /// <exception cref="ArgumentOutOfRangeException">当 timeout 小于 0 时抛出。</exception>
+    private static void ValidateParameters(float timeout)
+    {
+        if (timeout < 0f)
+            throw new ArgumentOutOfRangeException(
+                nameof(timeout),
+                timeout,
+                "Timeout must be greater than or equal to 0.");
+    }
+
+    /// <summary>
+    /// 执行发送命令并等待事件的协程逻辑。
+    /// </summary>
+    /// <typeparam name="TCommand">命令类型</typeparam>
+    /// <typeparam name="TEvent">事件类型</typeparam>
+    /// <param name="mediator">中介者服务</param>
+    /// <param name="eventBus">事件总线服务</param>
+    /// <param name="command">要发送的命令</param>
+    /// <param name="onEvent">事件回调</param>
+    /// <param name="timeout">超时时间</param>
+    /// <returns>协程枚举器</returns>
+    private static IEnumerator<IYieldInstruction> ExecuteSendCommandAndWaitEventCoroutine<TCommand, TEvent>(
+        IMediator mediator,
+        IEventBus eventBus,
+        TCommand command,
+        Action<TEvent>? onEvent,
+        float timeout)
+        where TCommand : notnull
+        where TEvent : class
+    {
         WaitForEvent<TEvent>? wait = null;
 
         try
@@ -80,7 +135,6 @@ public static class MediatorCoroutineExtensions
             wait = new WaitForEvent<TEvent>(eventBus);
 
             var task = mediator.Send(command).AsTask();
-
             yield return task.AsCoroutineInstruction();
 
             if (timeout > 0f)
@@ -90,7 +144,7 @@ public static class MediatorCoroutineExtensions
 
                 if (timeoutWait.IsTimeout)
                     throw new TimeoutException(
-                        $"wait for event {typeof(TEvent).Name} timeout.");
+                        $"Wait for event {typeof(TEvent).Name} timeout.");
             }
             else
             {
@@ -105,4 +159,5 @@ public static class MediatorCoroutineExtensions
             wait?.Dispose();
         }
     }
+// ... existing code ...
 }
\ No newline at end of file