diff --git a/comm/usersession.go b/comm/usersession.go
index bfda5793c..6d6b7955c 100644
--- a/comm/usersession.go
+++ b/comm/usersession.go
@@ -153,6 +153,7 @@ func (this *UserSession) Push() (err error) {
 			log.Errorf("SendMsgToUsers:%v err:%v", this, err)
 		}
 	}
+	this.msgqueue = this.msgqueue[:0]
 	return
 }