diff --git a/src/plugins/PFC/chat_observer.py b/src/plugins/PFC/chat_observer.py
index 395b14043..93618cf2d 100644
--- a/src/plugins/PFC/chat_observer.py
+++ b/src/plugins/PFC/chat_observer.py
@@ -421,15 +421,15 @@ class ChatObserver:
             logger.error(f"更新消息历史时出错: {str(e)}")
             return False
             
-    def get_message_history(self, limit: int = 50) -> List[Dict[str, Any]]:
-        """获取消息历史
+    def get_cached_messages(self, limit: int = 50) -> List[Dict[str, Any]]:
+        """获取缓存的消息历史
         
         Args:
-            limit: 获取的最大消息数量
+            limit: 获取的最大消息数量，默认50
             
         Returns:
-            List[Dict[str, Any]]: 消息历史列表
-        """
+            List[Dict[str, Any]]: 缓存的消息历史列表
+        """        
         return self.message_cache[:limit]
         
     def get_last_message(self) -> Optional[Dict[str, Any]]:
diff --git a/src/plugins/PFC/conversation.py b/src/plugins/PFC/conversation.py
index fecac1523..dda380491 100644
--- a/src/plugins/PFC/conversation.py
+++ b/src/plugins/PFC/conversation.py
@@ -204,7 +204,7 @@ class Conversation:
     async def _send_timeout_message(self):
         """发送超时结束消息"""
         try:
-            messages = self.chat_observer.get_message_history(limit=1)
+            messages = self.chat_observer.get_cached_messages(limit=1)
             if not messages:
                 return
                 
@@ -223,7 +223,7 @@ class Conversation:
             logger.warning("没有生成回复")
             return
             
-        messages = self.chat_observer.get_message_history(limit=1)
+        messages = self.chat_observer.get_cached_messages(limit=1)
         if not messages:
             logger.warning("没有最近的消息可以回复")
             return
diff --git a/src/plugins/PFC/pfc.py b/src/plugins/PFC/pfc.py
index 25c4728e0..62b28acb4 100644
--- a/src/plugins/PFC/pfc.py
+++ b/src/plugins/PFC/pfc.py
@@ -195,7 +195,7 @@ class GoalAnalyzer:
         return self.goals[1:].copy()
 
     async def analyze_conversation(self, goal, reasoning):
-        messages = self.chat_observer.get_message_history()
+        messages = self.chat_observer.get_cached_messages()
         chat_history_text = ""
         for msg in messages:
             time_str = datetime.datetime.fromtimestamp(msg["time"]).strftime("%H:%M:%S")
diff --git a/src/plugins/PFC/reply_checker.py b/src/plugins/PFC/reply_checker.py
index c53feba9b..6889f7ca8 100644
--- a/src/plugins/PFC/reply_checker.py
+++ b/src/plugins/PFC/reply_checker.py
@@ -33,7 +33,7 @@ class ReplyChecker:
             Tuple[bool, str, bool]: (是否合适, 原因, 是否需要重新规划)
         """
         # 获取最新的消息记录
-        messages = self.chat_observer.get_message_history(limit=5)
+        messages = self.chat_observer.get_cached_messages(limit=5)
         chat_history_text = ""
         for msg in messages:
             time_str = datetime.datetime.fromtimestamp(msg["time"]).strftime("%H:%M:%S")