diff --git a/go/chao-sdk-core/pkg/db/group_member_model.go b/go/chao-sdk-core/pkg/db/group_member_model.go
index 4af2ba3..4f980fb 100644
--- a/go/chao-sdk-core/pkg/db/group_member_model.go
+++ b/go/chao-sdk-core/pkg/db/group_member_model.go
@@ -194,9 +194,6 @@ func (d *DataBase) InsertGroupMember(ctx context.Context, groupMember *model_str
 func (d *DataBase) BatchInsertGroupMember(ctx context.Context, groupMemberList []*model_struct.LocalGroupMember) error {
 	d.groupMtx.Lock()
 	defer d.groupMtx.Unlock()
-	if groupMemberList == nil {
-		return errors.New("nil")
-	}
 	return errs.WrapMsg(d.conn.WithContext(ctx).Create(groupMemberList).Error, "BatchInsertMessageList failed")
 }