diff --git a/packages/vant-cli/src/common/index.ts b/packages/vant-cli/src/common/index.ts
index 1f1b15ad6..2276916e4 100644
--- a/packages/vant-cli/src/common/index.ts
+++ b/packages/vant-cli/src/common/index.ts
@@ -1,7 +1,13 @@
 import decamelize from 'decamelize';
 import { join } from 'path';
 import { get } from 'lodash';
-import { readdirSync, existsSync, lstatSync, readFileSync } from 'fs-extra';
+import {
+  lstatSync,
+  existsSync,
+  readdirSync,
+  readFileSync,
+  outputFileSync
+} from 'fs-extra';
 import { CONFIG, SRC_DIR, WEBPACK_CONFIG_FILE } from './constant';
 
 export const EXT_REGEXP = /\.\w+$/;
@@ -114,4 +120,18 @@ export function getCssLang(): string {
   return preprocessor;
 }
 
+// Smarter outputFileSync
+// Skip if content unchanged
+export function smartOutputFile(filePath: string, content: string) {
+  if (existsSync(filePath)) {
+    const previousContent = readFileSync(filePath, 'utf-8');
+
+    if (previousContent === content) {
+      return;
+    }
+  }
+
+  outputFileSync(filePath, content);
+}
+
 export { decamelize };
diff --git a/packages/vant-cli/src/compiler/compile-js.ts b/packages/vant-cli/src/compiler/compile-js.ts
index 4247a7bfd..c9685d1fd 100644
--- a/packages/vant-cli/src/compiler/compile-js.ts
+++ b/packages/vant-cli/src/compiler/compile-js.ts
@@ -1,14 +1,19 @@
-import { transformFileSync } from '@babel/core';
+import { transformFileAsync } from '@babel/core';
 import { removeSync, outputFileSync } from 'fs-extra';
 import { replaceExt } from '../common';
 
-export function compileJs(filePath: string) {
-  const result = transformFileSync(filePath);
+export function compileJs(filePath: string): Promise<undefined> {
+  return new Promise((resolve, reject) => {
+    transformFileAsync(filePath)
+      .then(result => {
+        if (result) {
+          const jsFilePath = replaceExt(filePath, '.js');
 
-  if (result) {
-    const jsFilePath = replaceExt(filePath, '.js');
-
-    removeSync(filePath);
-    outputFileSync(jsFilePath, result.code);
-  }
+          removeSync(filePath);
+          outputFileSync(jsFilePath, result.code);
+          resolve();
+        }
+      })
+      .catch(reject);
+  });
 }
diff --git a/packages/vant-cli/src/compiler/compile-sfc.ts b/packages/vant-cli/src/compiler/compile-sfc.ts
index 24efdaa96..5cd6cdba3 100644
--- a/packages/vant-cli/src/compiler/compile-sfc.ts
+++ b/packages/vant-cli/src/compiler/compile-sfc.ts
@@ -1,7 +1,7 @@
 import * as compiler from 'vue-template-compiler';
 import * as compileUtils from '@vue/component-compiler-utils';
 import { parse } from 'path';
-import { removeSync, writeFileSync, readFileSync } from 'fs-extra';
+import { remove, writeFileSync, readFileSync } from 'fs-extra';
 import { replaceExt } from '../common';
 import { compileJs } from './compile-js';
 import { compileStyle } from './compile-style';
@@ -63,7 +63,14 @@ function compileTemplate(template: string) {
   return result.code;
 }
 
-export async function compileSfc(filePath: string) {
+type CompileSfcOptions = {
+  skipStyle?: boolean;
+};
+
+export async function compileSfc(
+  filePath: string,
+  options: CompileSfcOptions = {}
+): Promise<any> {
   const source = readFileSync(filePath, 'utf-8');
   const jsFilePath = replaceExt(filePath, '.js');
 
@@ -75,30 +82,44 @@ export async function compileSfc(filePath: string) {
 
   const { template, styles } = descriptor;
 
-  removeSync(filePath);
+  const tasks = [remove(filePath)];
 
   // compile js part
   if (descriptor.script) {
-    let script = descriptor.script.content;
-    script = injectStyle(script, styles, filePath);
+    tasks.push(
+      new Promise((resolve, reject) => {
+        let script = descriptor.script!.content;
+        script = injectStyle(script, styles, filePath);
 
-    if (template) {
-      const render = compileTemplate(template.content);
-      script = injectRender(script, render);
-    }
+        if (template) {
+          const render = compileTemplate(template.content);
+          script = injectRender(script, render);
+        }
 
-    writeFileSync(jsFilePath, script);
-    compileJs(jsFilePath);
+        writeFileSync(jsFilePath, script);
+        compileJs(jsFilePath)
+          .then(resolve)
+          .catch(reject);
+      })
+    );
   }
 
   // compile style part
-  await Promise.all(
-    styles.map((style, index: number) => {
-      const cssFilePath = getSfcStylePath(filePath, style.lang || 'css', index);
+  if (!options.skipStyle) {
+    tasks.push(
+      ...styles.map((style, index: number) => {
+        const cssFilePath = getSfcStylePath(
+          filePath,
+          style.lang || 'css',
+          index
+        );
 
-      writeFileSync(cssFilePath, trim(style.content));
+        writeFileSync(cssFilePath, trim(style.content));
 
-      return compileStyle(cssFilePath);
-    })
-  );
+        return compileStyle(cssFilePath);
+      })
+    );
+  }
+
+  return Promise.all(tasks);
 }
diff --git a/packages/vant-cli/src/compiler/compile-site.ts b/packages/vant-cli/src/compiler/compile-site.ts
index 4da52247f..378b53f50 100644
--- a/packages/vant-cli/src/compiler/compile-site.ts
+++ b/packages/vant-cli/src/compiler/compile-site.ts
@@ -1,21 +1,13 @@
 import webpack from 'webpack';
 import WebpackDevServer from 'webpack-dev-server';
 import { getPort } from 'portfinder';
-import { getStepper } from '../common/logger';
-import { genPackageEntry } from './gen-package-entry';
-import { genPacakgeStyle } from './gen-package-style';
-import { genSiteMobileShared } from './gen-site-mobile-shared';
-import { genSiteDesktopShared } from './gen-site-desktop-shared';
-import { genStyleDepsMap } from './gen-style-deps-map';
 import { siteDevConfig } from '../config/webpack.site.dev';
 import { sitePrdConfig } from '../config/webpack.site.prd';
 
-const stpper = getStepper(4);
-
 function watch() {
   const server = new WebpackDevServer(
     webpack(siteDevConfig),
-    (siteDevConfig as any).devServer
+    siteDevConfig.devServer
   );
 
   getPort(
@@ -50,19 +42,9 @@ function build() {
 }
 
 export async function compileSite(production = false) {
-  stpper.start('Prepare For Compilation');
-  await genStyleDepsMap();
-  genPackageEntry();
-  genPacakgeStyle();
-  genSiteMobileShared();
-  genSiteDesktopShared();
-  stpper.success('Prepare For Compilation');
-
-  stpper.start('Build Documentation Site');
   if (production) {
     await build();
   } else {
     watch();
   }
-  stpper.success('Build Documentation Site');
 }
diff --git a/packages/vant-cli/src/compiler/gen-package-entry.ts b/packages/vant-cli/src/compiler/gen-package-entry.ts
index 5bfc89fcb..a796555cb 100644
--- a/packages/vant-cli/src/compiler/gen-package-entry.ts
+++ b/packages/vant-cli/src/compiler/gen-package-entry.ts
@@ -1,11 +1,6 @@
 import { join } from 'path';
-import { writeFileSync } from 'fs-extra';
-import { pascalize, getComponents } from '../common';
-import {
-  SRC_DIR,
-  PACKAGE_JSON,
-  PACKAGE_ENTRY_FILE
-} from '../common/constant';
+import { pascalize, getComponents, smartOutputFile } from '../common';
+import { SRC_DIR, PACKAGE_JSON, PACKAGE_ENTRY_FILE } from '../common/constant';
 
 const version = process.env.PACKAGE_VERSION || PACKAGE_JSON.version;
 
@@ -56,5 +51,5 @@ export default {
 };
 `;
 
-  writeFileSync(PACKAGE_ENTRY_FILE, content);
+  smartOutputFile(PACKAGE_ENTRY_FILE, content);
 }
diff --git a/packages/vant-cli/src/compiler/gen-package-style.ts b/packages/vant-cli/src/compiler/gen-package-style.ts
index b38b1c115..b5b83e3cf 100644
--- a/packages/vant-cli/src/compiler/gen-package-style.ts
+++ b/packages/vant-cli/src/compiler/gen-package-style.ts
@@ -1,6 +1,5 @@
 import { join } from 'path';
-import { writeFileSync } from 'fs-extra';
-import { replaceExt } from '../common';
+import { replaceExt, smartOutputFile } from '../common';
 import { CSS_LANG, getCssBaseFile } from '../common/css';
 import {
   SRC_DIR,
@@ -23,5 +22,5 @@ export function genPacakgeStyle() {
     .map((name: string) => `@import "${join(SRC_DIR, `${name}/index${ext}`)}";`)
     .join('\n');
 
-  writeFileSync(replaceExt(PACKAGE_STYLE_FILE, ext), content);
+  smartOutputFile(replaceExt(PACKAGE_STYLE_FILE, ext), content);
 }
diff --git a/packages/vant-cli/src/compiler/gen-site-desktop-shared.ts b/packages/vant-cli/src/compiler/gen-site-desktop-shared.ts
index f44611b22..4d9f0aa0e 100644
--- a/packages/vant-cli/src/compiler/gen-site-desktop-shared.ts
+++ b/packages/vant-cli/src/compiler/gen-site-desktop-shared.ts
@@ -1,7 +1,12 @@
 import glob from 'fast-glob';
 import { join, parse } from 'path';
-import { existsSync, writeFileSync } from 'fs-extra';
-import { pascalize, removeExt, getComponents } from '../common';
+import { existsSync } from 'fs-extra';
+import {
+  pascalize,
+  removeExt,
+  getComponents,
+  smartOutputFile
+} from '../common';
 import {
   SRC_DIR,
   DOCS_DIR,
@@ -64,5 +69,5 @@ ${genExportConfig()}
 ${genExportDocuments(documents)}
 `;
 
-  writeFileSync(SITE_DESKTOP_SHARED_FILE, code);
+  smartOutputFile(SITE_DESKTOP_SHARED_FILE, code);
 }
diff --git a/packages/vant-cli/src/compiler/gen-site-mobile-shared.ts b/packages/vant-cli/src/compiler/gen-site-mobile-shared.ts
index eb8362e37..96b8ee0e1 100644
--- a/packages/vant-cli/src/compiler/gen-site-mobile-shared.ts
+++ b/packages/vant-cli/src/compiler/gen-site-mobile-shared.ts
@@ -1,10 +1,9 @@
 import { join } from 'path';
-import { existsSync, ensureDirSync, writeFileSync } from 'fs-extra';
-import { decamelize, pascalize, removeExt, getComponents } from '../common';
+import { existsSync } from 'fs-extra';
+import { decamelize, pascalize, removeExt, getComponents, smartOutputFile } from '../common';
 import {
   CONFIG,
   SRC_DIR,
-  DIST_DIR,
   SITE_MODILE_SHARED_FILE
 } from '../common/constant';
 
@@ -64,6 +63,5 @@ export function genSiteMobileShared() {
   const components = getComponents();
   const code = genCode(components);
 
-  ensureDirSync(DIST_DIR);
-  writeFileSync(SITE_MODILE_SHARED_FILE, code);
+  smartOutputFile(SITE_MODILE_SHARED_FILE, code);
 }
diff --git a/packages/vant-cli/src/compiler/gen-style-deps-map.ts b/packages/vant-cli/src/compiler/gen-style-deps-map.ts
index ef6b3d3a0..69d796fd5 100644
--- a/packages/vant-cli/src/compiler/gen-style-deps-map.ts
+++ b/packages/vant-cli/src/compiler/gen-style-deps-map.ts
@@ -6,22 +6,16 @@ import dependencyTree from 'dependency-tree';
 import { join } from 'path';
 import { compileJs } from './compile-js';
 import { compileSfc } from './compile-sfc';
-import { compileStyle } from './compile-style';
+import { CSS_LANG } from '../common/css';
+import { SRC_DIR, DIST_DIR, STYPE_DEPS_JSON_FILE } from '../common/constant';
+import { copySync, existsSync, readdirSync } from 'fs-extra';
 import {
   isDir,
   isSfc,
-  isStyle,
   isScript,
-  getComponents
+  getComponents,
+  smartOutputFile
 } from '../common';
-import { SRC_DIR, DIST_DIR, STYPE_DEPS_JSON_FILE } from '../common/constant';
-import {
-  copy,
-  existsSync,
-  readdirSync,
-  writeFileSync,
-  ensureDirSync
-} from 'fs-extra';
 
 interface DependencyObj {
   [k: string]: DependencyObj;
@@ -30,10 +24,10 @@ interface DependencyObj {
 const components = getComponents();
 const TEMP_DIR = join(DIST_DIR, 'temp');
 
-async function compileTempDir(dir: string) {
+function compileTempDir(dir: string): Promise<unknown> {
   const files = readdirSync(dir);
 
-  await Promise.all(
+  return Promise.all(
     files.map(filename => {
       const filePath = join(dir, filename);
 
@@ -43,16 +37,12 @@ async function compileTempDir(dir: string) {
 
       if (filename.indexOf('index') !== -1) {
         if (isSfc(filePath)) {
-          return compileSfc(filePath);
+          return compileSfc(filePath, { skipStyle: true });
         }
 
         if (isScript(filePath)) {
           return compileJs(filePath);
         }
-
-        if (isStyle(filePath)) {
-          return compileStyle(filePath);
-        }
       }
 
       return Promise.resolve();
@@ -81,7 +71,7 @@ function search(tree: DependencyObj, component: string, checkList: string[]) {
 }
 
 function getStylePath(component: string) {
-  return join(TEMP_DIR, `${component}/index.css`);
+  return join(TEMP_DIR, `${component}/index.${CSS_LANG}`);
 }
 
 function checkStyleExists(component: string) {
@@ -147,27 +137,29 @@ function getSequence(depsMap: DepsMap) {
 }
 
 export async function genStyleDepsMap() {
-  const map = {} as DepsMap;
+  return new Promise(resolve => {
+    const map = {} as DepsMap;
 
-  await copy(SRC_DIR, TEMP_DIR);
-  await compileTempDir(TEMP_DIR);
+    copySync(SRC_DIR, TEMP_DIR);
+    compileTempDir(TEMP_DIR).then(() => {
+      components.filter(checkStyleExists).forEach(component => {
+        map[component] = analyzeDeps(component);
+      });
 
-  components.filter(checkStyleExists).forEach(component => {
-    map[component] = analyzeDeps(component);
+      const sequence = getSequence(map);
+
+      Object.keys(map).forEach(key => {
+        map[key] = map[key].sort(
+          (a, b) => sequence.indexOf(a) - sequence.indexOf(b)
+        );
+      });
+
+      smartOutputFile(
+        STYPE_DEPS_JSON_FILE,
+        JSON.stringify({ map, sequence }, null, 2)
+      );
+
+      resolve();
+    });
   });
-
-  const sequence = getSequence(map);
-
-  Object.keys(map).forEach(key => {
-    map[key] = map[key].sort(
-      (a, b) => sequence.indexOf(a) - sequence.indexOf(b)
-    );
-  });
-
-  ensureDirSync(DIST_DIR);
-
-  writeFileSync(
-    STYPE_DEPS_JSON_FILE,
-    JSON.stringify({ map, sequence }, null, 2)
-  );
 }
diff --git a/packages/vant-cli/src/compiler/vant-cli-site-plugin.ts b/packages/vant-cli/src/compiler/vant-cli-site-plugin.ts
new file mode 100644
index 000000000..f97e34c69
--- /dev/null
+++ b/packages/vant-cli/src/compiler/vant-cli-site-plugin.ts
@@ -0,0 +1,28 @@
+import { Compiler } from 'webpack';
+import { genPackageEntry } from './gen-package-entry';
+import { genPacakgeStyle } from './gen-package-style';
+import { genSiteMobileShared } from './gen-site-mobile-shared';
+import { genSiteDesktopShared } from './gen-site-desktop-shared';
+import { genStyleDepsMap } from './gen-style-deps-map';
+
+const PLUGIN_NAME = 'VantCliSitePlugin';
+
+export class VantCliSitePlugin {
+  apply(compiler: Compiler) {
+    compiler.hooks.beforeCompile.tapPromise(PLUGIN_NAME, this.genSiteEntry);
+  }
+
+  genSiteEntry() {
+    return new Promise((resolve, reject) => {
+      genStyleDepsMap()
+        .then(() => {
+          genPackageEntry();
+          genPacakgeStyle();
+          genSiteMobileShared();
+          genSiteDesktopShared();
+          resolve();
+        })
+        .catch(reject);
+    });
+  }
+}
diff --git a/packages/vant-cli/src/config/webpack.site.dev.ts b/packages/vant-cli/src/config/webpack.site.dev.ts
index 0aa19a1ef..1c86a39fa 100644
--- a/packages/vant-cli/src/config/webpack.site.dev.ts
+++ b/packages/vant-cli/src/config/webpack.site.dev.ts
@@ -3,6 +3,7 @@ import HtmlWebpackPlugin from 'html-webpack-plugin';
 import { join } from 'path';
 import { baseConfig } from './webpack.base';
 import { getWebpackConfig } from '../common';
+import { VantCliSitePlugin } from '../compiler/vant-cli-site-plugin';
 import {
   CONFIG,
   SITE_MODILE_SHARED_FILE,
@@ -45,6 +46,7 @@ export const siteDevBaseConfig = merge(baseConfig as any, {
     }
   },
   plugins: [
+    new VantCliSitePlugin(),
     new HtmlWebpackPlugin({
       title,
       logo: siteConfig.logo,