diff --git a/internal/rpc/group/group.go b/internal/rpc/group/group.go
index 8ac6960e2..9f0d8716b 100644
--- a/internal/rpc/group/group.go
+++ b/internal/rpc/group/group.go
@@ -365,6 +365,14 @@ func (s *groupServer) InviteUserToGroup(ctx context.Context, req *pbGroup.Invite
 		var resp pbGroup.InviteUserToGroupResp
 		joinReq := pbGroup.JoinGroupReq{}
 		for _, v := range req.InvitedUserIDList {
+			if imdb.IsExistGroupMember(req.GroupID, v) {
+				log.NewError(req.OperationID, "IsExistGroupMember ", req.GroupID, v)
+				var resultNode pbGroup.Id2Result
+				resultNode.Result = -1
+				resultNode.UserID = v
+				resp.Id2ResultList = append(resp.Id2ResultList, &resultNode)
+				continue
+			}
 			var groupRequest db.GroupRequest
 			groupRequest.UserID = v
 			groupRequest.GroupID = req.GroupID
@@ -452,8 +460,19 @@ func (s *groupServer) InviteUserToGroup(ctx context.Context, req *pbGroup.Invite
 			resp.Id2ResultList = append(resp.Id2ResultList, &resultNode)
 		}
 	} else {
-		okUserIDList = req.InvitedUserIDList
-		if err := db.DB.AddUserToSuperGroup(req.GroupID, req.InvitedUserIDList); err != nil {
+		for _, v := range req.InvitedUserIDList {
+			if imdb.IsExistGroupMember(req.GroupID, v) {
+				log.NewError(req.OperationID, "IsExistGroupMember ", req.GroupID, v)
+				var resultNode pbGroup.Id2Result
+				resultNode.Result = -1
+				resp.Id2ResultList = append(resp.Id2ResultList, &resultNode)
+				continue
+			} else {
+				okUserIDList = append(okUserIDList, v)
+			}
+		}
+		//okUserIDList = req.InvitedUserIDList
+		if err := db.DB.AddUserToSuperGroup(req.GroupID, okUserIDList); err != nil {
 			log.NewError(req.OperationID, "AddUserToSuperGroup failed ", req.GroupID, err)
 			return &pbGroup.InviteUserToGroupResp{ErrCode: constant.ErrDB.ErrCode, ErrMsg: err.Error()}, nil
 		}