diff --git a/internal/demo/register/onboarding_process.go b/internal/demo/register/onboarding_process.go
index fe79a78d0..28d4d9140 100644
--- a/internal/demo/register/onboarding_process.go
+++ b/internal/demo/register/onboarding_process.go
@@ -75,11 +75,15 @@ func joinTestDepartment(operationID, userID, departmentID string) error {
 	}()
 	etcdConn := getcdv3.GetConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","), config.Config.RpcRegisterName.OpenImOrganizationName)
 	client := organizationRpc.NewOrganizationClient(etcdConn)
-	req := &organizationRpc.CreateDepartmentMemberReq{DepartmentMember: &commonPb.DepartmentMember{
-		UserID:       userID,
-		DepartmentID: departmentID,
-		Position:     randomPosition(),
-	}}
+	req := &organizationRpc.CreateDepartmentMemberReq{
+		DepartmentMember: &commonPb.DepartmentMember{
+			UserID:       userID,
+			DepartmentID: departmentID,
+			Position:     randomPosition(),
+		},
+		OperationID: operationID,
+		OpUserID:    config.Config.Manager.AppManagerUid[0],
+	}
 	resp, err := client.CreateDepartmentMember(context.Background(), req)
 	if err != nil {
 		log.NewError(operationID, utils.GetSelfFuncName(), err.Error())
diff --git a/internal/rpc/office/office.go b/internal/rpc/office/office.go
index cd48527e6..1e76fa2b6 100644
--- a/internal/rpc/office/office.go
+++ b/internal/rpc/office/office.go
@@ -9,6 +9,7 @@ import (
 	imdb "Open_IM/pkg/common/db/mysql_model/im_mysql_model"
 	"Open_IM/pkg/common/log"
 	"Open_IM/pkg/grpc-etcdv3/getcdv3"
+	pbCache "Open_IM/pkg/proto/cache"
 	pbOffice "Open_IM/pkg/proto/office"
 	pbCommon "Open_IM/pkg/proto/sdk_ws"
 	"Open_IM/pkg/utils"
@@ -17,6 +18,7 @@ import (
 	"net"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -172,13 +174,27 @@ func (s *officeServer) SendMsg2Tag(_ context.Context, req *pbOffice.SendMsg2TagR
 	}
 	var groupUserIDList []string
 	for _, groupID := range req.GroupList {
-		userIDList, err := im_mysql_model.GetGroupMemberIDListByGroupID(groupID)
-		if err != nil {
-			log.NewError(req.OperationID, utils.GetSelfFuncName(), "GetGroupMemberIDListByGroupID failed", err.Error(), groupID)
-			continue
+		etcdConn := getcdv3.GetConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","), config.Config.RpcRegisterName.OpenImCacheName)
+		cacheClient := pbCache.NewCacheClient(etcdConn)
+		req := pbCache.GetGroupMemberIDListFromCacheReq{
+			OperationID: req.OperationID,
+			GroupID:     groupID,
 		}
-		log.NewDebug(req.OperationID, utils.GetSelfFuncName(), userIDList)
-		groupUserIDList = append(groupUserIDList, userIDList...)
+		getGroupMemberIDListFromCacheResp, err := cacheClient.GetGroupMemberIDListFromCache(context.Background(), &req)
+		if err != nil {
+			log.NewError(req.OperationID, "GetGroupMemberIDListFromCache rpc call failed ", err.Error(), req.String())
+			resp.CommonResp.ErrCode = constant.ErrServer.ErrCode
+			resp.CommonResp.ErrMsg = err.Error()
+			return resp, nil
+		}
+		if getGroupMemberIDListFromCacheResp.CommonResp.ErrCode != 0 {
+			log.NewError(req.OperationID, "GetGroupMemberIDListFromCache rpc logic call failed ", getGroupMemberIDListFromCacheResp.CommonResp.ErrCode)
+			resp.CommonResp.ErrCode = getGroupMemberIDListFromCacheResp.CommonResp.ErrCode
+			resp.CommonResp.ErrMsg = getGroupMemberIDListFromCacheResp.CommonResp.ErrMsg
+			return resp, nil
+		}
+		log.NewDebug(req.OperationID, utils.GetSelfFuncName(), getGroupMemberIDListFromCacheResp.UserIDList)
+		groupUserIDList = append(groupUserIDList, getGroupMemberIDListFromCacheResp.UserIDList...)
 	}
 	log.NewDebug(req.OperationID, utils.GetSelfFuncName(), groupUserIDList, req.GroupList)
 	var userIDList []string
@@ -195,22 +211,37 @@ func (s *officeServer) SendMsg2Tag(_ context.Context, req *pbOffice.SendMsg2TagR
 	user, err := imdb.GetUserByUserID(req.SendID)
 	if err != nil {
 		log.NewError(req.OperationID, "GetUserByUserID failed ", err.Error(), req.SendID)
+		resp.CommonResp.ErrMsg = err.Error()
+		resp.CommonResp.ErrCode = constant.ErrDB.ErrCode
+		return resp, nil
 	}
+	var wg sync.WaitGroup
+	wg.Add(len(userIDList))
 	for _, userID := range userIDList {
-		msg.TagSendMessage(req.OperationID, user, userID, req.Content, req.SenderPlatformID)
+		go func(userID string) {
+			defer wg.Done()
+			msg.TagSendMessage(req.OperationID, user, userID, req.Content, req.SenderPlatformID)
+		}(userID)
 	}
+	wg.Wait()
 	var tagSendLogs db.TagSendLog
+
+	wg.Add(len(userIDList))
 	for _, userID := range userIDList {
-		userName, err := im_mysql_model.GetUserNameByUserID(userID)
-		if err != nil {
-			log.NewError(req.OperationID, utils.GetSelfFuncName(), "GetUserNameByUserID failed", err.Error())
-			continue
-		}
-		tagSendLogs.UserList = append(tagSendLogs.UserList, db.TagUser{
-			UserID:   userID,
-			UserName: userName,
-		})
+		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())
+				return
+			}
+			tagSendLogs.UserList = append(tagSendLogs.UserList, db.TagUser{
+				UserID:   userID,
+				UserName: userName,
+			})
+		}(userID)
 	}
+	wg.Wait()
 	tagSendLogs.SendID = req.SendID
 	tagSendLogs.Content = req.Content
 	tagSendLogs.SenderPlatformID = req.SenderPlatformID
diff --git a/pkg/common/db/mysql_model/im_mysql_model/organization_model.go b/pkg/common/db/mysql_model/im_mysql_model/organization_model.go
index c87aa3f87..be06f7f38 100644
--- a/pkg/common/db/mysql_model/im_mysql_model/organization_model.go
+++ b/pkg/common/db/mysql_model/im_mysql_model/organization_model.go
@@ -252,7 +252,7 @@ func getDepartmentParent(departmentID string, dbConn *gorm.DB) (*db.Department,
 	var parentID string
 	dbConn.LogMode(true)
 	// select * from departments where department_id = (select parent_id from departments where department_id= zx234fd);
-	err := dbConn.Table("departments").Where("department_id=?", dbConn.Table("departments").Where("department_id=?", departmentID).Pluck("parent_id", parentID)).Error
+	err := dbConn.Table("departments").Where("department_id=?", dbConn.Table("departments").Where("department_id=?", departmentID).Pluck("parent_id", parentID)).Find(&department).Error
 	return &department, err
 }