diff --git a/ppdet/modeling/backbones/hrnet.py b/ppdet/modeling/backbones/hrnet.py
index b74002cec82e5246c13db99be25e19098d45f001..6c4ef706f7eab19c48ada57d91a69ab9516d0651 100644
--- a/ppdet/modeling/backbones/hrnet.py
+++ b/ppdet/modeling/backbones/hrnet.py
@@ -15,6 +15,7 @@
 import paddle
 import paddle.nn as nn
 import paddle.nn.functional as F
+from paddle.nn import AdaptiveAvgPool2D, Linear, Uniform
 from paddle.regularizer import L2Decay
 from paddle import ParamAttr
 from paddle.nn.initializer import Normal