diff --git a/sdk/trtc/trtc.go b/sdk/trtc/trtc.go
index 12a51e827daa65d3087f5d5458891b322eaad958..8dd257062ef59573eb65f57cb7ebfc0348e71f20 100644
--- a/sdk/trtc/trtc.go
+++ b/sdk/trtc/trtc.go
@@ -16,8 +16,8 @@ func CreateGroupTRTCUserSig(uid uint64) string {
 	appSecret := "321bd60f73096b059c7350f1cd97d51028850b34fa58c5c0d26bb4a19e783de8"
 	expireTimeInSeconds := uint32(60 * 60 * 24 * 7) //一个星期
 	nowTime := time.Now()
-	base64Str := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%d%v%v%v", uid, appId, nowTime.Unix(), expireTimeInSeconds)))
-	userSig := hmacSha256(fmt.Sprintf("%d%v%v%v%v", uid, appId, nowTime.Unix(), expireTimeInSeconds, base64Str), appSecret)
+	base64Str := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%d\n%v\n%v\n%v", uid, appId, nowTime.Unix(), expireTimeInSeconds)))
+	userSig := hmacSha256(fmt.Sprintf("%d\n%v\n%v\n%v\n%v", uid, appId, nowTime.Unix(), expireTimeInSeconds, base64Str), appSecret)
 	mylogrus.MyLog.Infof("CreateGroupTRTCUserSig uid:%d, token:%s", uid, userSig)
 
 	return userSig