diff --git a/config/config.js b/config/config.js
index a7daaeed94681beadd81a0bb1ae5f2865f1aa0de..337a53b04ed8187d4679bace9b5601f9ed02f01b 100644
--- a/config/config.js
+++ b/config/config.js
@@ -36,7 +36,8 @@ const plugins = [
   ],
 ];
 
-// judge add ga
+// 针对 preview.pro.ant.design 的 GA 统计代码
+// 业务上不需要这个
 if (process.env.APP_TYPE === 'site') {
   plugins.push([
     'umi-plugin-ga',