diff --git a/docs/installation.md b/docs/installation.md
index 7d738e08ba85adc33a46e1977d3d0cd23b55b266..0cea150f8275c8670a76f838002664367d8d4a89 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -6,7 +6,7 @@
 * CUDA 9.2
 * cudnn v7.1
 * paddlepaddle >= 1.5.2
-* nccl >= 2.4.7
+* 如果有多卡训练需求，请安装 nccl >= 2.4.7
 
 
 ## 1. 安装PaddlePaddle