diff --git a/controller/groupAgent/agent.ts b/controller/groupAgent/agent.ts
index 3eebb34..721360c 100644
--- a/controller/groupAgent/agent.ts
+++ b/controller/groupAgent/agent.ts
@@ -8,7 +8,7 @@ const agent = async (ctx: Context.Data) => {
     requestId,
     larkCard,
     larkService,
-    larkBody: { messageId, msgText, chatId, mentions },
+    larkBody: { messageId, msgText, chatId, mentions, rawMsgText },
   } = ctx
   const cardGender = larkCard.child("groupAgent")
   // 回复一个loading的卡片
@@ -40,12 +40,20 @@ const agent = async (ctx: Context.Data) => {
   }
   logger.debug(`Chat history: ${JSON.stringify(chatHistory)}`)
 
+  // 根据Mention，拼装原始消息
+  let userInput = rawMsgText
+  for (const mention of mentions ?? []) {
+    if (mention.id.user_id) {
+      userInput = userInput.replace(mention.key, mention.name)
+    }
+  }
+
   // 调用大模型
   try {
     const llmRes = await llm.invoke(
       "groupAgent",
       {
-        userInput: msgText,
+        userInput,
         chatHistory: JSON.stringify(chatHistory),
         time: new Date().toLocaleString("zh-CN", { timeZone: "Asia/Shanghai" }),
       },