diff --git a/ws/user.go b/ws/user.go
index 7d6c9da..0f80d70 100644
--- a/ws/user.go
+++ b/ws/user.go
@@ -91,8 +91,8 @@ func OneKefuMessage(toId string, str []byte) {
 	if mKefuConns != nil && ok {
 		for _, kefu := range mKefuConns {
 			log.Println("OneKefuMessage lock")
-			Mux.Lock()
-			defer Mux.Unlock()
+			kefu.Mux.Lock()
+			defer kefu.Mux.Unlock()
 			log.Println("OneKefuMessage unlock")
 			kefu.Conn.WriteMessage(websocket.TextMessage, str)
 		}
@@ -113,6 +113,8 @@ func SendPingToKefuClient() {
 			if kefuConn == nil {
 				continue
 			}
+			kefuConn.Mux.Lock()
+			defer kefuConn.Mux.Unlock()
 			err := kefuConn.Conn.WriteMessage(websocket.TextMessage, str)
 			if err == nil {
 				newKefuConns = append(newKefuConns, kefuConn)
diff --git a/ws/ws.go b/ws/ws.go
index 4af674a..706dc7b 100644
--- a/ws/ws.go
+++ b/ws/ws.go
@@ -21,12 +21,14 @@ type User struct {
 	Avator  string
 	To_id   string
 	Role_id string
+	Mux     sync.Mutex
 }
 type Message struct {
 	conn        *websocket.Conn
 	context     *gin.Context
 	content     []byte
 	messageType int
+	Mux         sync.Mutex
 }
 type TypeMessage struct {
 	Type interface{} `json:"type"`
@@ -126,9 +128,9 @@ func WsServerBackend() {
 				Type: "pong",
 			}
 			str, _ := json.Marshal(msg)
-			Mux.Lock()
+			message.Mux.Lock()
+			defer message.Mux.Unlock()
 			conn.WriteMessage(websocket.TextMessage, str)
-			Mux.Unlock()
 		case "inputing":
 			to := typeMsg.Data.(map[string]interface{})["to"].(string)
 			OneKefuMessage(to, message.content)