diff --git a/src/core/__pycache__/engine.cpython-311.pyc b/src/core/__pycache__/engine.cpython-311.pyc
index df4e051..bedaa9d 100644
Binary files a/src/core/__pycache__/engine.cpython-311.pyc and b/src/core/__pycache__/engine.cpython-311.pyc differ
diff --git a/src/core/engine.py b/src/core/engine.py
index 45aa280..b9bf09a 100644
--- a/src/core/engine.py
+++ b/src/core/engine.py
@@ -256,16 +256,18 @@ class WeChatAgent:
             chat_name = chat_info.get("current_chat", "")
             messages = chat_info.get("messages", [])
             
-            # 防重复处理（同一聊天 5 秒内不重复处理）
+            # 防重复处理：基于最新消息内容hash，10秒内不重复回复同一条
             current_time = time.time()
-            chat_key = f"{chat_name}_{hash(str(messages[-1:]))}"
-            if chat_key in self._last_processed_time:
-                if current_time - self._last_processed_time[chat_key] < 5:
-                    return
+            if messages:
+                latest_content = messages[0].get("content", "")[:50]  # 取最新消息的前50字符
+                dedup_key = f"{chat_name}_{latest_content}"
+                if dedup_key in self._last_processed_time:
+                    if current_time - self._last_processed_time[dedup_key] < 10:
+                        logger.debug(f"消息已处理过，跳过: {latest_content[:30]}")
+                        return
+                self._last_processed_time[dedup_key] = current_time
             
             if has_new or messages:
-                self._last_processed_time[chat_key] = current_time
-                
                 # 创建快照
                 snapshot = ChatSnapshot(
                     timestamp=current_time,
@@ -290,8 +292,9 @@ class WeChatAgent:
                 })
                 
                 # 判断是否需要回复
-                if self.processor.should_reply(snapshot):
-                    logger.info(f"需要回复，生成回复内容...")
+                # 策略：只要对方有新消息（is_self=False）就回复，不依赖 has_new_message
+                if messages and not messages[0].get("is_self", True):
+                    logger.info(f"检测到对方新消息，准备回复...")
                     reply = self.processor.generate_reply(snapshot)
                     if reply:
                         logger.info(f"发送回复: {reply[:50]}...")
@@ -300,7 +303,7 @@ class WeChatAgent:
                     else:
                         logger.warning("生成回复为空")
                 else:
-                    logger.debug("不需要回复")
+                    logger.debug("不需要回复（无新消息或自己发送）")
         
         except Exception as e:
             logger.error(f"轮询处理异常: {e}")