diff --git a/config/config.js b/config/config.js
index 43434e1077433ea5508efa20ad0ed67b7655e6b2..766780e5e0343bf5758812017b78db7e15baea3d 100644
--- a/config/config.js
+++ b/config/config.js
@@ -20,6 +20,7 @@ export default {
           default: 'zh-CN', // default zh-CN
           baseNavigator: true, // default true, when it is true, will use `navigator.language` overwrite default
         },
+        polyfills: ['ie9'],
         ...(
           require('os').platform() === 'darwin'
           ? {
diff --git a/src/global.js b/src/global.js
deleted file mode 100644
index 2100827dfb735ce3b96b8b91e8ebeca35d63cd42..0000000000000000000000000000000000000000
--- a/src/global.js
+++ /dev/null
@@ -1 +0,0 @@
-import './polyfill';
diff --git a/src/polyfill.js b/src/polyfill.js
deleted file mode 100644
index ad1eb6b9a483f1ee5ad2950729109058360d3aa5..0000000000000000000000000000000000000000
--- a/src/polyfill.js
+++ /dev/null
@@ -1,12 +0,0 @@
-import '@babel/polyfill';
-import 'url-polyfill';
-import setprototypeof from 'setprototypeof';
-
-// React depends on set/map/requestAnimationFrame
-// https://reactjs.org/docs/javascript-environment-requirements.html
-// import 'core-js/es6/set';
-// import 'core-js/es6/map';
-// import 'raf/polyfill'; 只兼容到IE10不需要，况且fetch的polyfill whatwg-fetch也只兼容到IE10
-
-// https://github.com/umijs/umi/issues/413
-Object.setPrototypeOf = setprototypeof;