diff --git a/handler/tool.go b/handler/tool.go
index 3497490..817d53d 100644
--- a/handler/tool.go
+++ b/handler/tool.go
@@ -214,6 +214,7 @@ func subscribeAndHandleMessagesV3(ws *websocket.Conn, device_id int) {
 	//定时器，发送计数器
 	t_count := 0
 	t := 0
+	log.Printf("device:%d send frame count:%d,img is closed", device_id, count)
 	//计算帧率
 	for {
 		//从service获取当前帧