diff --git a/electron/main.js b/electron/main.js
index 16bbdba..776b7f2 100644
--- a/electron/main.js
+++ b/electron/main.js
@@ -164,8 +164,8 @@ class WeComConnection {
       text = text.replace(/@\S+/g, '').trim();
     }
 
-    // 构建 sessionKey（格式：wecom:chatType:chatId）
-    const sessionKey = `wecom:${chatType}:${chatId}`;
+    // 构建 sessionKey（格式：botId:chatId）
+    const sessionKey = `${this.botId}:${chatId}`;
 
     // 处理媒体文件
     const attachments = [];