diff --git a/binding/doc/build.windows.md b/binding/doc/build.windows.md
index 2fd3807f..4a3ee38f 100644
--- a/binding/doc/build.windows.md
+++ b/binding/doc/build.windows.md
@@ -7,6 +7,8 @@
 * [CMake][CMake]
 * [Visual Studio 2017][VS2017] with C++ Desktop Development
 
+> 在安装CMake的时候必须勾选将CMake加入PATH
+
 ## 编译步骤
 
 确保你安装好了Python3，CMake还有Visual Studio和C++编译环境，下载好[vnpy]并解压。  
@@ -23,4 +25,4 @@ msbuild vnpy_binding.sln /p:Configuration=Release /p:Platform=x64
 [Python]:https://www.python.org/ftp/python/3.7.2/python-3.7.2-amd64-webinstall.exe
 [CMake]:https://github.com/Kitware/CMake/releases/download/v3.13.3/cmake-3.13.3-win64-x64.msi
 [VS2017]:https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community&rel=15#
-[vnpy]:https://github.com/vnpy/vnpy/archive/v2.0-DEV.zip
\ No newline at end of file
+[vnpy]:https://github.com/vnpy/vnpy/archive/v2.0-DEV.zip