diff --git a/doc/fluid/api/gen_doc.py b/doc/fluid/api/gen_doc.py
index 1ea36d59468e051a46954db8979056b48dafc57c..ef3204e121d78aa92fb3702d258976ee161e53d5 100644
--- a/doc/fluid/api/gen_doc.py
+++ b/doc/fluid/api/gen_doc.py
@@ -19,7 +19,6 @@ import types
 import os
 import contextlib
 import paddle.fluid as fluid
-import paddle.complex as complex
 #import paddle.framework as framework
 
 def parse_arg():