diff --git a/utils/message.js b/utils/message.js
index 412826f..911c0ca 100644
--- a/utils/message.js
+++ b/utils/message.js
@@ -91,7 +91,11 @@ export class OfficialChatGPTClient {
     }
     if (res.status !== 200) {
       let body = await res.text()
-      throw new Error(body)
+      if (body.indexOf('Conversation not found') > -1) {
+        throw new Error('对话不存在，请使用指令”#结束对话“结束当前对话后重新开始对话。')
+      } else {
+        throw new Error(body)
+      }
     }
     // todo accept as stream
     const decoder = new TextDecoder('utf-8')