diff --git a/PaddleCV/PaddleDetection/docs/INSTALL.md b/PaddleCV/PaddleDetection/docs/INSTALL.md
index 2bf74338fc6fcec2d368d2981449d7f2e14c39ad..49e5bc7bbf801a8b129f74d2ff894ec5517807eb 100644
--- a/PaddleCV/PaddleDetection/docs/INSTALL.md
+++ b/PaddleCV/PaddleDetection/docs/INSTALL.md
@@ -36,7 +36,7 @@ python -c "import paddle; print(paddle.__version__)"
 
 ### Requirements:
 
-- Python2 or Python3
+- Python3
 - CUDA >= 8.0
 - cuDNN >= 5.0
 - nccl >= 2.1.2