diff --git a/internal/api/office/tag.go b/internal/api/office/tag.go
index c187ecef5..02278f60e 100644
--- a/internal/api/office/tag.go
+++ b/internal/api/office/tag.go
@@ -11,6 +11,7 @@ import (
 	"Open_IM/pkg/utils"
 	"context"
 	"github.com/gin-gonic/gin"
+	"google.golang.org/grpc"
 	"net/http"
 	"strings"
 )
@@ -260,7 +261,8 @@ func GetTagSendLogs(c *gin.Context) {
 	}
 	etcdConn := getcdv3.GetConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","), config.Config.RpcRegisterName.OpenImOfficeName)
 	client := pbOffice.NewOfficeServiceClient(etcdConn)
-	respPb, err := client.GetTagSendLogs(context.Background(), &reqPb)
+	maxSizeOption := grpc.MaxCallRecvMsgSize(1024 * 1024 * 20)
+	respPb, err := client.GetTagSendLogs(context.Background(), &reqPb, maxSizeOption)
 	if err != nil {
 		log.NewError(req.OperationID, utils.GetSelfFuncName(), "GetTagSendLogs failed", err.Error())
 		c.JSON(http.StatusInternalServerError, gin.H{"errCode": 500, "errMsg": "GetTagSendLogs rpc server failed" + err.Error()})
diff --git a/internal/msg_gateway/gate/init.go b/internal/msg_gateway/gate/init.go
index 5cf682b84..60c97f1de 100644
--- a/internal/msg_gateway/gate/init.go
+++ b/internal/msg_gateway/gate/init.go
@@ -19,6 +19,8 @@ var (
 	sendMsgFailedCount  uint64
 	sendMsgSuccessCount uint64
 	userCount           uint64
+
+	sendMsgAllCountLock sync.RWMutex
 )
 
 func Init(rpcPort, wsPort int) {
diff --git a/internal/msg_gateway/gate/logic.go b/internal/msg_gateway/gate/logic.go
index 51955f0fe..5644f1cb3 100644
--- a/internal/msg_gateway/gate/logic.go
+++ b/internal/msg_gateway/gate/logic.go
@@ -143,7 +143,9 @@ func (ws *WServer) pullMsgBySeqListResp(conn *UserConn, m *Req, pb *sdk_ws.PullM
 
 }
 func (ws *WServer) sendMsgReq(conn *UserConn, m *Req) {
+	sendMsgAllCountLock.Lock()
 	sendMsgAllCount++
+	sendMsgAllCountLock.Unlock()
 	log.NewInfo(m.OperationID, "Ws call success to sendMsgReq start", m.MsgIncr, m.ReqIdentifier, m.SendID, m.Data)
 	nReply := new(pbChat.SendMsgResp)
 	isPass, errCode, errMsg, pData := ws.argsValidate(m, constant.WSSendMsg)
diff --git a/internal/rpc/office/office.go b/internal/rpc/office/office.go
index 1cade65eb..753fca492 100644
--- a/internal/rpc/office/office.go
+++ b/internal/rpc/office/office.go
@@ -28,15 +28,18 @@ type officeServer struct {
 	rpcRegisterName string
 	etcdSchema      string
 	etcdAddr        []string
+	ch              chan tagSendStruct
 }
 
 func NewOfficeServer(port int) *officeServer {
 	log.NewPrivateLog(constant.LogFileName)
+	ch := make(chan tagSendStruct, 100000)
 	return &officeServer{
 		rpcPort:         port,
 		rpcRegisterName: config.Config.RpcRegisterName.OpenImOfficeName,
 		etcdSchema:      config.Config.Etcd.EtcdSchema,
 		etcdAddr:        config.Config.Etcd.EtcdAddr,
+		ch:              ch,
 	}
 }
 
@@ -80,6 +83,7 @@ func (s *officeServer) Run() {
 		log.NewError("0", "RegisterEtcd failed ", err.Error())
 		return
 	}
+	go s.sendTagMsgRoutine()
 	err = srv.Serve(listener)
 	if err != nil {
 		log.NewError("0", "Serve failed ", err.Error())
@@ -88,6 +92,25 @@ func (s *officeServer) Run() {
 	log.NewInfo("0", "message cms rpc success")
 }
 
+type tagSendStruct struct {
+	operationID      string
+	user             *db.User
+	userID           string
+	content          string
+	senderPlatformID int32
+}
+
+func (s *officeServer) sendTagMsgRoutine() {
+	log.NewInfo("", utils.GetSelfFuncName(), "start")
+	for {
+		select {
+		case v := <-s.ch:
+			msg.TagSendMessage(v.operationID, v.user, v.userID, v.content, v.senderPlatformID)
+			time.Sleep(time.Millisecond * 100)
+		}
+	}
+}
+
 func (s *officeServer) GetUserTags(_ context.Context, req *pbOffice.GetUserTagsReq) (resp *pbOffice.GetUserTagsResp, err error) {
 	log.NewInfo(req.OperationID, utils.GetSelfFuncName(), "req ", req.String())
 	resp = &pbOffice.GetUserTagsResp{
@@ -228,30 +251,46 @@ func (s *officeServer) SendMsg2Tag(_ context.Context, req *pbOffice.SendMsg2TagR
 		resp.CommonResp.ErrCode = constant.ErrDB.ErrCode
 		return resp, nil
 	}
-	var wg sync.WaitGroup
-	wg.Add(len(userIDList))
+	var successUserIDList []string
 	for _, userID := range userIDList {
-		go func(userID string) {
-			defer wg.Done()
-			msg.TagSendMessage(req.OperationID, user, userID, req.Content, req.SenderPlatformID)
-		}(userID)
+		t := tagSendStruct{
+			operationID:      req.OperationID,
+			user:             user,
+			userID:           userID,
+			content:          req.Content,
+			senderPlatformID: req.SenderPlatformID,
+		}
+		select {
+		case s.ch <- t:
+			log.NewDebug(t.operationID, utils.GetSelfFuncName(), "msg: ", t, "send success")
+			successUserIDList = append(successUserIDList, userID)
+		// if channel is full, return grpc req
+		case <-time.After(1 * time.Second):
+			log.NewError(t.operationID, utils.GetSelfFuncName(), s.ch, "channel is full")
+			resp.CommonResp.ErrCode = constant.ErrSendLimit.ErrCode
+			resp.CommonResp.ErrMsg = constant.ErrSendLimit.ErrMsg
+			return resp, nil
+		}
 	}
-	wg.Wait()
-	var tagSendLogs db.TagSendLog
 
-	wg.Add(len(userIDList))
-	for _, userID := range userIDList {
+	var tagSendLogs db.TagSendLog
+	var wg sync.WaitGroup
+	wg.Add(len(successUserIDList))
+	var lock sync.Mutex
+	for _, userID := range successUserIDList {
 		go func(userID string) {
 			defer wg.Done()
 			userName, err := im_mysql_model.GetUserNameByUserID(userID)
 			if err != nil {
-				log.NewError(req.OperationID, utils.GetSelfFuncName(), "GetUserNameByUserID failed", err.Error())
+				log.NewError(req.OperationID, utils.GetSelfFuncName(), "GetUserNameByUserID failed", err.Error(), userID)
 				return
 			}
+			lock.Lock()
 			tagSendLogs.UserList = append(tagSendLogs.UserList, db.TagUser{
 				UserID:   userID,
 				UserName: userName,
 			})
+			lock.Unlock()
 		}(userID)
 	}
 	wg.Wait()
diff --git a/pkg/common/constant/constant.go b/pkg/common/constant/constant.go
index 621bf9eb1..66a4439e3 100644
--- a/pkg/common/constant/constant.go
+++ b/pkg/common/constant/constant.go
@@ -273,4 +273,4 @@ const BigVersion = "v3"
 
 const LogFileName = "OpenIM.log"
 
-const StatisticsTimeInterval = 300
+const StatisticsTimeInterval = 60