diff --git a/2019/12/webpack.md b/2019/12/webpack.md
index e7e7b22..4c35e97 100644
--- a/2019/12/webpack.md
+++ b/2019/12/webpack.md
@@ -14,3 +14,7 @@ yarn upgrade +xxx 升级
 
 所以，yarn 安装webpack 需要运行：yarn global add webpack
 
+2.webpack使用：
+用yarn 安装好后  终端运行 webpack 会报错（webpack命令找不到） 
+
+注，使用no
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