diff --git a/lib/compile-vue.js b/lib/compile-vue.js
index bbadd55..fe2742a 100644
--- a/lib/compile-vue.js
+++ b/lib/compile-vue.js
@@ -123,7 +123,7 @@ export function compileScss(file, inject = '') {
 export function parseJs(
   code = '',
   imports,
-  { IS_MPA, currentPage, IS_ENTRY, DEPLOY_PATH } = {},
+  { IS_MPA, currentPage, IS_ENTRY, DEPLOY_PATH, LEGACY_MODE } = {},
   filename
 ) {
   let fixedStyle = '\n\n'
@@ -215,14 +215,24 @@ export function parseJs(
           if (isBuild) {
             name = name.replace(/\.scss/, '.css')
           }
-          let tmp = `style_${uuid()}`
-          fixedStyle += `__sheets__.push(${tmp})\n`
-
           // 修正那反人类的windows路径
-          return `import ${tmp} from '${name}' assert { type: 'css' }\n${tmp}.path = '${name.replace(
-            /\\/g,
-            '/'
-          )}'`
+          let _name = name.replace(/\\/g, '/')
+          let tmp = `style_${uuid()}`
+
+          if (LEGACY_MODE) {
+            fixedStyle += `${tmp}.then(r => {
+  let stylesheet = new CSSStyleSheet()
+  stylesheet.path = '${_name}'
+  stylesheet.replaceSync(r)
+  __sheets__.push(stylesheet)
+})
+`
+            return `${tmp} = window.fetch('${name}').then(r => r.text())`
+          } else {
+            fixedStyle += `${tmp}.path = '${_name}'\n__sheets__.push(${tmp})\n`
+
+            return `import ${tmp} from '${name}' assert { type: 'css' }`
+          }
         } else {
           if (name.startsWith('@/')) {
             name = name.replace('@/', urlJoin(DEPLOY_PATH, ASSETS_DIR))
@@ -385,9 +395,9 @@ export function parseHtml(html, { page, imports, entry }) {
       '</head>',
       `${
         process.env.NODE_ENV === 'development'
-          ? `  <script>${
-              Es.transformSync(HMR_SCRIPT, { minify: true }).code.trim()
-            }</script>\n`
+          ? `  <script>${Es.transformSync(HMR_SCRIPT, {
+              minify: true
+            }).code.trim()}</script>\n`
           : ''
       }</head>`
     )
diff --git a/lib/dev.js b/lib/dev.js
index c2addd8..32bdc6f 100644
--- a/lib/dev.js
+++ b/lib/dev.js
@@ -31,6 +31,7 @@ export default async function createServer(root = '', conf = {}) {
   const USE_HTTPS = conf.devServer.https
   const DOMAIN = conf.devServer.domain || 'localhost'
   const INJECT_SCSS = readFile(conf.inject?.scss)
+  const LEGACY_MODE = !!conf.legacy
 
   if (USE_HTTPS) {
     Object.assign(SERVER_OPTIONS, conf.devServer.ssl)
@@ -159,7 +160,8 @@ export default async function createServer(root = '', conf = {}) {
                 IS_MPA,
                 currentPage,
                 IS_ENTRY: true,
-                DEPLOY_PATH
+                DEPLOY_PATH,
+                LEGACY_MODE
               })
 
               code = parseHtml(html, { page, imports: conf.imports, entry })
@@ -195,7 +197,8 @@ export default async function createServer(root = '', conf = {}) {
                 SOURCE_DIR,
                 CACHE,
                 DEPLOY_PATH,
-                INJECT_SCSS
+                INJECT_SCSS,
+                LEGACY_MODE
               })
 
               res.setHeader('content-type', MIME_TYPES.js)
@@ -256,7 +259,8 @@ export default async function createServer(root = '', conf = {}) {
               code = parseJs(code + '', conf.imports, {
                 IS_MPA,
                 currentPage,
-                DEPLOY_PATH
+                DEPLOY_PATH,
+                LEGACY_MODE
               })
               res.setHeader('content-type', MIME_TYPES.js)
             }
@@ -365,7 +369,8 @@ export default async function createServer(root = '', conf = {}) {
                       SOURCE_DIR,
                       CACHE,
                       DEPLOY_PATH,
-                      INJECT_SCSS
+                      INJECT_SCSS,
+                      LEGACY_MODE
                     })
                     let tmp = CACHE[filePath]
                     if (tmp.changed) {
diff --git a/lib/prod.js b/lib/prod.js
index 25accf8..1f13aed 100644
--- a/lib/prod.js
+++ b/lib/prod.js
@@ -15,6 +15,7 @@ export default function compile(root = '', dist = '', conf = {}) {
   const IS_MPA = Object.keys(conf.pages).length > 1
   const PAGES_PREFIX = Object.keys(conf.pages).map(it => `pages/${it}/`)
   const INJECT_SCSS = readFile(conf.inject?.scss)
+  const LEGACY_MODE = !!conf.legacy
 
   let timeStart = Date.now()
   let template = fs.cat(join(process.env.PWD, 'index.html')).toString()
@@ -43,7 +44,14 @@ export default function compile(root = '', dist = '', conf = {}) {
     })
 
   let compileFiles = function (currentPage, page, files) {
-    let options = { IS_MPA, currentPage, SOURCE_DIR, DEPLOY_PATH, INJECT_SCSS }
+    let options = {
+      IS_MPA,
+      currentPage,
+      SOURCE_DIR,
+      DEPLOY_PATH,
+      INJECT_SCSS,
+      LEGACY_MODE
+    }
 
     for (let it of files) {
       // 入口文件, 特殊处理