diff --git a/ppcls/modeling/architectures/regnet.py b/ppcls/modeling/architectures/regnet.py
index 4a3eb582358c4cf052a5a4c7c99011c06fc51999..cb3f5b31a2e400c62cbb45fccbb783685427031e 100644
--- a/ppcls/modeling/architectures/regnet.py
+++ b/ppcls/modeling/architectures/regnet.py
@@ -16,8 +16,6 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
-import math
-
 import paddle
 import paddle.fluid as fluid
 from paddle.fluid.param_attr import ParamAttr