diff --git a/handler/tool.go b/handler/tool.go
index 7522064..e09ec04 100644
--- a/handler/tool.go
+++ b/handler/tool.go
@@ -245,6 +245,10 @@ func subscribeAndHandleMessagesV3(ws *websocket.Conn, device_id int) {
 				err5 := img.Close()
 				if err5 != nil {
 					log.Printf("img close err:%v", err)
+				} else {
+					if c%10 == 0 {
+						log.Printf("device:%d send frame count:%d,img is closed", device_id, c)
+					}
 				}
 			}
 		} else {