diff --git a/src/core/__pycache__/engine.cpython-311.pyc b/src/core/__pycache__/engine.cpython-311.pyc
index b53542e..5d3aeb9 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 8319b14..b1ed841 100644
--- a/src/core/engine.py
+++ b/src/core/engine.py
@@ -57,13 +57,14 @@ class MessageProcessor:
             logger.debug("没有消息，不回复")
             return False
         
-        # 检查最后一条消息
-        last_msg = messages[-1]
-        sender = last_msg.get("sender", "")
-        content = last_msg.get("content", "")
-        is_self = last_msg.get("is_self", False)
+        # VLM 返回的消息是按时间倒序的（最新的在前）
+        # 取第一条（最新的）消息进行判断
+        latest_msg = messages[0]
+        sender = latest_msg.get("sender", "")
+        content = latest_msg.get("content", "")
+        is_self = latest_msg.get("is_self", False)
         
-        logger.debug(f"最后一条消息: sender={sender}, is_self={is_self}, content={content[:30]}")
+        logger.debug(f"最新消息: sender={sender}, is_self={is_self}, content={content[:30]}")
         
         # 如果是自己发的消息，不回复
         if is_self:
@@ -79,8 +80,8 @@ class MessageProcessor:
     
     def generate_reply(self, chat_snapshot: ChatSnapshot) -> str:
         """生成回复内容"""
-        # 先检查关键词规则
-        last_content = chat_snapshot.messages[-1].get("content", "")
+        # 先检查关键词规则（取最新消息）
+        latest_content = chat_snapshot.messages[0].get("content", "") if chat_snapshot.messages else ""
         
         for rule in self._rules:
             if not rule.enabled:
@@ -89,7 +90,7 @@ class MessageProcessor:
             if rule.reply_type == "keyword":
                 # 关键词匹配
                 for keyword in rule.keywords:
-                    if keyword in last_content:
+                    if keyword in latest_content:
                         logger.info(f"关键词匹配: {keyword}")
                         return rule.reply_content
             
@@ -104,9 +105,9 @@ class MessageProcessor:
         try:
             # 构造 prompt
             prompt = f"""当前聊天: {chat_snapshot.chat_name}
-历史消息:
+历史消息（按时间倒序）:
 """
-            for msg in chat_snapshot.messages[-10:]:  # 最近10条
+            for msg in chat_snapshot.messages[:10]:  # 取最新10条（VLM返回的是倒序）
                 sender = "我" if msg.get("is_self") else "对方"
                 prompt += f"- [{sender}] {msg.get('content', '')}\n"