diff --git a/msgtest/module/group_manager.go b/msgtest/module/group_manager.go
index e206204f0..aa011bc43 100644
--- a/msgtest/module/group_manager.go
+++ b/msgtest/module/group_manager.go
@@ -19,8 +19,15 @@ func (t *TestGroupManager) GenGroupID(prefix string) string {
 }
 
 func (t *TestGroupManager) CreateGroup(groupID string, groupName string, ownerUserID string, userIDs []string) error {
+	const batch = 2000
+	var memberUserIDs []string
+	if len(userIDs) > batch {
+		memberUserIDs = userIDs[:batch]
+	} else {
+		memberUserIDs = userIDs
+	}
 	req := &group.CreateGroupReq{
-		MemberUserIDs: userIDs,
+		MemberUserIDs: memberUserIDs,
 		OwnerUserID:   ownerUserID,
 		GroupInfo: &sdkws.GroupInfo{
 			GroupID:       groupID,
@@ -30,7 +37,32 @@ func (t *TestGroupManager) CreateGroup(groupID string, groupName string, ownerUs
 		},
 	}
 	resp := &group.CreateGroupResp{}
-	return t.postWithCtx(constant.CreateGroupRouter, &req, &resp)
+	if err := t.postWithCtx(constant.CreateGroupRouter, &req, &resp); err != nil {
+		return err
+	}
+	if len(userIDs) > batch {
+		num := len(userIDs) / batch
+		if len(userIDs)%batch != 0 {
+			num++
+		}
+		for i := 1; i < num; i++ {
+			start := batch * i
+			end := batch*i + batch
+			if len(userIDs) < end {
+				end = len(userIDs)
+			}
+			req := map[string]any{
+				"groupID":        groupID,
+				"invitedUserIDs": userIDs[start:end],
+				"reason":         "test",
+			}
+			resp := struct{}{}
+			if err := t.postWithCtx(constant.RouterGroup+"/invite_user_to_group", req, &resp); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
 }
 
 func (t *TestGroupManager) InviteUserToGroup(ctx context.Context, groupID string, invitedUserIDs []string) error {
diff --git a/msgtest/pressure_test.go b/msgtest/pressure_test.go
index c74d72e6d..c4864d30c 100644
--- a/msgtest/pressure_test.go
+++ b/msgtest/pressure_test.go
@@ -48,7 +48,7 @@ func InitWithFlag() {
 	flag.IntVar(&msgSenderNumEvreyUser, "m", 100, "msg sender num evrey user")
 
 	flag.IntVar(&recvMsgUserNum, "r", 20, "recv msg user num")
-	flag.IntVar(&fastenedUserNum, "u", 320, "fastened user num")
+	flag.IntVar(&fastenedUserNum, "u", 300, "fastened user num")
 }
 
 func init() {
@@ -128,7 +128,7 @@ func NewPressureTester() *PressureTester {
 
 func (p *PressureTester) genUserIDs() (userIDs, fastenedUserIDs, recvMsgUserIDs []string) {
 	userIDs = p.userManager.GenUserIDs(totalOnlineUserNum - fastenedUserNum)                  // 在线用户
-	fastenedUserIDs = p.userManager.GenUserIDsWithPrefix(fastenedUserNum, FastenedUserPrefix) // 指定320用户
+	fastenedUserIDs = p.userManager.GenUserIDsWithPrefix(fastenedUserNum, FastenedUserPrefix) // 指定300用户
 	recvMsgUserIDs = p.userManager.GenUserIDsWithPrefix(recvMsgUserNum, RecvMsgPrefix)        // 抽样用户完整SDK
 	return
 }
@@ -200,7 +200,7 @@ func (p *PressureTester) createTestGroups(userIDs, fastenedUserIDs, recvMsgUserI
 		}
 		p.tenThousandGroupIDs = append(p.tenThousandGroupIDs, groupID)
 	}
-	// create thousand group
+	// create two thousand group
 	exclude := TenThousandGroupNum * TenThousandGroupUserNum
 	for i := 1; i <= ThousandGroupNum; i++ {
 		groupID := p.groupManager.GenGroupID(fmt.Sprintf("thousandGroup_%d", i))
@@ -210,7 +210,7 @@ func (p *PressureTester) createTestGroups(userIDs, fastenedUserIDs, recvMsgUserI
 		}
 		p.thousandGroupIDs = append(p.thousandGroupIDs, groupID)
 	}
-	// create hundred group
+	// create five hundred group
 	exclude += exclude + ThousandGroupNum*ThousandGroupUserNum
 	for i := 1; i <= HundredGroupNum; i++ {
 		groupID := p.groupManager.GenGroupID(fmt.Sprintf("hundredGroup_%d", i))
diff --git a/wasm/indexdb/stranger_model.go b/wasm/indexdb/stranger_model.go
index a0eece913..feaf7a6fd 100644
--- a/wasm/indexdb/stranger_model.go
+++ b/wasm/indexdb/stranger_model.go
@@ -33,7 +33,6 @@ type LocalStrangers struct {
 func NewLocalStrangers() *LocalStrangers {
 	return &LocalStrangers{}
 }
-
 func (l *LocalStrangers) GetStrangerInfo(ctx context.Context, userIDs []string) (result []*model_struct.LocalStranger, err error) {
 	gList, err := exec.Exec(utils.StructToJsonString(userIDs))
 	if err != nil {
diff --git a/wasm/indexdb/user_model.go b/wasm/indexdb/user_model.go
index b2b90e645..b052b0333 100644
--- a/wasm/indexdb/user_model.go
+++ b/wasm/indexdb/user_model.go
@@ -94,29 +94,3 @@ func (l *LocalUsers) InsertLoginUser(ctx context.Context, user *model_struct.Loc
 	_, err := exec.Exec(utils.StructToJsonString(temp))
 	return err
 }
-
-func (l *LocalUsers) GetStrangerInfo(ctx context.Context, userIDs []string) (result []*model_struct.LocalStranger, err error) {
-	gList, err := exec.Exec(utils.StructToJsonString(userIDs))
-	if err != nil {
-		return nil, err
-	} else {
-		if v, ok := gList.(string); ok {
-			var temp []model_struct.LocalStranger
-			err := utils.JsonStringToStruct(v, &temp)
-			if err != nil {
-				return nil, err
-			}
-			for _, v := range temp {
-				v1 := v
-				result = append(result, &v1)
-			}
-			return result, err
-		} else {
-			return nil, exec.ErrType
-		}
-	}
-}
-
-func (l *LocalUsers) SetStrangerInfo(ctx context.Context, strangerList []*model_struct.LocalStranger) error {
-	return nil
-}