diff --git a/packages/fes-preset-built-in/src/plugins/commands/webpackConfig/css.js b/packages/fes-preset-built-in/src/plugins/commands/webpackConfig/css.js
index ef8437d4..6d494ad2 100644
--- a/packages/fes-preset-built-in/src/plugins/commands/webpackConfig/css.js
+++ b/packages/fes-preset-built-in/src/plugins/commands/webpackConfig/css.js
@@ -109,7 +109,7 @@ export default function createCssWebpackConfig({
         browserslist
     });
 
-    if (isDev && config.useExtraCSS) {
+    if (!isDev && config.useExtraCSS) {
         webpackConfig.plugin('extra-css')
             .use(require.resolve('mini-css-extract-plugin'), [{
                 filename: '[name].[contenthash:8].css',
diff --git a/packages/fes-preset-built-in/src/plugins/features/useExtraCSS.js b/packages/fes-preset-built-in/src/plugins/features/useExtraCSS.js
index 5e146b9a..174c2a7c 100644
--- a/packages/fes-preset-built-in/src/plugins/features/useExtraCSS.js
+++ b/packages/fes-preset-built-in/src/plugins/features/useExtraCSS.js
@@ -1,12 +1,12 @@
 
 export default (api) => {
     api.describe({
-        key: 'useExtraCss',
+        key: 'useExtraCSS',
         config: {
             schema(joi) {
                 return joi.boolean();
-            }
-        },
-        default: true
+            },
+            default: true
+        }
     });
 };
diff --git a/packages/fes-template-h5/.fes.prod.js b/packages/fes-template-h5/.fes.prod.js
index 71cd0917..6377fd5b 100644
--- a/packages/fes-template-h5/.fes.prod.js
+++ b/packages/fes-template-h5/.fes.prod.js
@@ -5,5 +5,10 @@ export default {
     request: {
         base: '/api'
     },
+    chainWebpack(memo) {
+        memo.output.filename('./static/[name].[contenthash:8].js')
+            .chunkFilename('./static/[name].[contenthash:8].chunk.js')
+            .assetModuleFilename('./static/[hash][ext][query]');
+    },
     useExtraCSS: false
 };