diff --git a/internal/msg_transfer/logic/online_history_msg_handler.go b/internal/msg_transfer/logic/online_history_msg_handler.go
index 9bf13e57a..43bd240c4 100644
--- a/internal/msg_transfer/logic/online_history_msg_handler.go
+++ b/internal/msg_transfer/logic/online_history_msg_handler.go
@@ -39,15 +39,13 @@ func (och *OnlineHistoryConsumerHandler) Init(cmdCh chan Cmd2Value) {
 }
 func (och *OnlineHistoryConsumerHandler) TriggerCmd(status int) {
 	operationID := utils.OperationIDGenerator()
-	for {
-		err := sendCmd(och.cmdCh, Cmd2Value{Cmd: status, Value: ""}, 1)
-		if err != nil {
-			log.Error(operationID, "TriggerCmd failed ", err.Error(), status)
-			continue
-		}
-		log.Debug(operationID, "TriggerCmd success", status)
+	err := sendCmd(och.cmdCh, Cmd2Value{Cmd: status, Value: ""}, 1)
+	if err != nil {
+		log.Error(operationID, "TriggerCmd failed ", err.Error(), status)
 		return
 	}
+	log.Debug(operationID, "TriggerCmd success", status)
+
 }
 func sendCmd(ch chan Cmd2Value, value Cmd2Value, timeout int64) error {
 	var flag = 0
diff --git a/internal/rpc/msg/send_msg.go b/internal/rpc/msg/send_msg.go
index 8f7e7f427..16e4c5ab6 100644
--- a/internal/rpc/msg/send_msg.go
+++ b/internal/rpc/msg/send_msg.go
@@ -24,6 +24,9 @@ import (
 	"time"
 )
 
+//When the number of group members is greater than this value，Online users will be sent first，Guaranteed service availability
+const GroupMemberNum = 500
+
 type MsgCallBackReq struct {
 	SendID       string `json:"sendID"`
 	RecvID       string `json:"recvID"`
@@ -254,34 +257,32 @@ func (rpc *rpcChat) SendMsg(_ context.Context, pb *pbChat.SendMsgReq) (*pbChat.S
 
 		default:
 		}
-		onUserIDList, offUserIDList := getOnlineAndOfflineUserIDList(memberUserIDList, pb.OperationID)
-		log.Debug(pb.OperationID, onUserIDList, offUserIDList)
+		m := make(map[string][]string, 2)
+		if len(memberUserIDList) > GroupMemberNum {
+			getOnlineAndOfflineUserIDList(memberUserIDList, m, pb.OperationID)
+			log.Debug(pb.OperationID, m[constant.OnlineStatus], m[constant.OfflineStatus])
+		} else {
+			m[constant.OnlineStatus] = memberUserIDList
+		}
+
 		//split  parallel send
 		var wg sync.WaitGroup
 		var sendTag bool
 		var split = 50
-		remain := len(onUserIDList) % split
-		for i := 0; i < len(onUserIDList)/split; i++ {
-			wg.Add(1)
-			go rpc.sendMsgToGroup(onUserIDList[i*split:(i+1)*split], *pb, constant.OnlineStatus, &sendTag, &wg)
+		for k, v := range m {
+			remain := len(v) % split
+			for i := 0; i < len(v)/split; i++ {
+				wg.Add(1)
+				go rpc.sendMsgToGroup(v[i*split:(i+1)*split], *pb, k, &sendTag, &wg)
+			}
+			if remain > 0 {
+				wg.Add(1)
+				go rpc.sendMsgToGroup(v[split*(len(v)/split):], *pb, k, &sendTag, &wg)
+			}
 		}
-		if remain > 0 {
-			wg.Add(1)
-			go rpc.sendMsgToGroup(onUserIDList[split*(len(onUserIDList)/split):], *pb, constant.OnlineStatus, &sendTag, &wg)
-		}
-		wg.Wait()
-		remain = len(offUserIDList) % split
-		for i := 0; i < len(offUserIDList)/split; i++ {
-			wg.Add(1)
-			go rpc.sendMsgToGroup(offUserIDList[i*split:(i+1)*split], *pb, constant.OfflineStatus, &sendTag, &wg)
-		}
-		if remain > 0 {
-			wg.Add(1)
-			go rpc.sendMsgToGroup(offUserIDList[split*(len(offUserIDList)/split):], *pb, constant.OfflineStatus, &sendTag, &wg)
-		}
-		wg.Wait()
 		wg.Add(1)
-		rpc.sendMsgToGroup(addUidList, *pb, constant.OnlineStatus, &sendTag, &wg)
+		go rpc.sendMsgToGroup(addUidList, *pb, constant.OnlineStatus, &sendTag, &wg)
+		wg.Wait()
 		// callback
 		if err := callbackAfterSendGroupMsg(pb); err != nil {
 			log.NewError(pb.OperationID, utils.GetSelfFuncName(), "callbackAfterSendGroupMsg failed", err.Error())
@@ -695,7 +696,8 @@ func Notification(n *NotificationMsg) {
 		log.NewError(req.OperationID, "SendMsg rpc failed, ", req.String(), reply.ErrCode, reply.ErrMsg)
 	}
 }
-func getOnlineAndOfflineUserIDList(memberList []string, operationID string) (onllUserIDList []string, offlUserIDList []string) {
+func getOnlineAndOfflineUserIDList(memberList []string, m map[string][]string, operationID string) {
+	var onllUserIDList, offlUserIDList []string
 	var wsResult []*pbRelay.GetUsersOnlineStatusResp_SuccessResult
 	req := &pbRelay.GetUsersOnlineStatusReq{}
 	req.UserIDList = memberList
@@ -731,7 +733,8 @@ func getOnlineAndOfflineUserIDList(memberList []string, operationID string) (onl
 			offlUserIDList = append(offlUserIDList, v1)
 		}
 	}
-	return onllUserIDList, offlUserIDList
+	m[constant.OnlineStatus] = onllUserIDList
+	m[constant.OfflineStatus] = offlUserIDList
 }
 
 func (rpc *rpcChat) sendMsgToGroup(list []string, pb pbChat.SendMsgReq, status string, sendTag *bool, wg *sync.WaitGroup) {