diff --git a/fastNLP/action/optimizer.py b/fastNLP/action/optimizer.py
deleted file mode 100644
index b493e3f0..00000000
--- a/fastNLP/action/optimizer.py
+++ /dev/null
@@ -1,5 +0,0 @@
-'''
-use optimizer from Pytorch
-'''
-
-from torch.optim import *
\ No newline at end of file