diff --git a/controllers/event_controller.go b/controllers/event_controller.go
index 11c9b8314..b1c222d9f 100644
--- a/controllers/event_controller.go
+++ b/controllers/event_controller.go
@@ -165,12 +165,14 @@ func handleMessages() {
 		msg := <-broadcast
 		if msg.GroupID == 0 {
 			globals.SugarLogger.Debugf("heart %v", utils.Format4Output(msg, false))
-			if err := clientsHeart[msg.UserID].WriteJSON(&model.ImMessageRecord{
-				Key: "pang",
-			}); err != nil {
-				globals.SugarLogger.Debugf("heart client.WriteJSON error: %v", err)
-				clientsHeart[msg.UserID].Close() //关闭
-				delete(clientsHeart, msg.UserID)
+			if clientsHeart[msg.UserID] != nil {
+				if err := clientsHeart[msg.UserID].WriteJSON(&model.ImMessageRecord{
+					Key: "pang",
+				}); err != nil {
+					globals.SugarLogger.Debugf("heart client.WriteJSON error: %v", err)
+					clientsHeart[msg.UserID].Close() //关闭
+					delete(clientsHeart, msg.UserID)
+				}
 			}
 		} else {
 			globals.SugarLogger.Debugf("clients len %v", len(clients))