diff --git a/business/jxstore/event/event.go b/business/jxstore/event/event.go
index 898a83830..f1254a585 100644
--- a/business/jxstore/event/event.go
+++ b/business/jxstore/event/event.go
@@ -37,6 +37,7 @@ const (
 type WSClient struct {
 	Clients      map[int]map[string]*websocket.Conn
 	ClientsHeart map[string]*websocket.Conn
+	s            *sync.RWMutex
 }
 
 func init() {
@@ -99,6 +100,7 @@ func ImMessage(userID string, ws *websocket.Conn) (err error) {
 	if len(messageGroups) == 0 {
 		return
 	}
+	wsClient.s.Lock()
 	clientUser[userID] = ws
 	wsClient.ClientsHeart[userID] = ws
 	for _, v := range messageGroups {
@@ -108,6 +110,7 @@ func ImMessage(userID string, ws *websocket.Conn) (err error) {
 			wsClient.Clients[v.GroupID] = clientUser
 		}
 	}
+	wsClient.s.Unlock()
 	globals.SugarLogger.Debugf("userID :%v ,clients :%v", userID, utils.Format4Output(wsClient.Clients, false))
 
 	var s *model.ImMessageRecord