diff --git a/internal/rpc/group/group.go b/internal/rpc/group/group.go
index 9c0eb6bc8..a36547c2c 100644
--- a/internal/rpc/group/group.go
+++ b/internal/rpc/group/group.go
@@ -1552,6 +1552,9 @@ func (s *groupServer) DismissGroup(ctx context.Context, req *pbGroup.DismissGrou
 	if err := rocksCache.DelGroupInfoFromCache(req.GroupID); err != nil {
 		log.NewError(req.OperationID, utils.GetSelfFuncName(), err.Error(), req.GroupID)
 	}
+	if err := rocksCache.DelGroupMemberListHashFromCache(req.GroupID); err != nil {
+		log.NewError(req.OperationID, utils.GetSelfFuncName(), err.Error(), req.GroupID)
+	}
 	log.NewInfo(req.OperationID, utils.GetSelfFuncName(), "rpc return ", pbGroup.CommonResp{ErrCode: 0, ErrMsg: ""})
 	return &pbGroup.DismissGroupResp{CommonResp: &pbGroup.CommonResp{ErrCode: 0, ErrMsg: ""}}, nil
 }