diff --git a/src/utils/package/agora.ts b/src/utils/package/agora.ts
index 4981839..72293c7 100644
--- a/src/utils/package/agora.ts
+++ b/src/utils/package/agora.ts
@@ -117,6 +117,7 @@ const agora = {
   },
   // 加入频道
   joinChannel: (bool: boolean) => {
+    // false 摄像头 true 共享屏幕
     if (bool) {
       rtcEngine.joinChannel(option.token, option.channelId, option.userid, {
         channelProfile: ChannelProfileType.ChannelProfileLiveBroadcasting, //设置频道场景为直播场景