diff --git a/mmrazor/models/architectures/dynamic_ops/mixins/dynamic_mixins.py b/mmrazor/models/architectures/dynamic_ops/mixins/dynamic_mixins.py
index 31e645c66..83d219e48 100644
--- a/mmrazor/models/architectures/dynamic_ops/mixins/dynamic_mixins.py
+++ b/mmrazor/models/architectures/dynamic_ops/mixins/dynamic_mixins.py
@@ -1,6 +1,6 @@
 # Copyright (c) OpenMMLab. All rights reserved.
 import logging
-from abc import ABC, abstractmethod
+from abc import abstractmethod
 from typing import Any, Dict, Optional, Set, Tuple
 
 import torch
@@ -11,7 +11,8 @@
 from mmrazor.models.mutables.base_mutable import BaseMutable
 
 
-class DynamicMixin(ABC):
+# TODO abstract class
+class DynamicMixin():
     """Base class for dynamic OP. A dynamic OP usually consists of a normal
     static OP and mutables, where mutables are used to control the searchable
     (mutable) part of the dynamic OP.