diff --git a/packages/taro-mini-runner/src/webpack/chain.ts b/packages/taro-mini-runner/src/webpack/chain.ts
index 289b982d94ac..301ac3c5cbc9 100644
--- a/packages/taro-mini-runner/src/webpack/chain.ts
+++ b/packages/taro-mini-runner/src/webpack/chain.ts
@@ -263,15 +263,13 @@ export const getModule = (appPath: string, {
         // 让 sass 文件里的 @import 能解析小程序原生样式文体，如 @import "a.wxss";
         const extname = path.extname(url)
         if (extname === '.scss' || extname === '.sass' || extname === '.css') {
-          done({
-            file: url
-          })
+          return null
         } else {
           const filePath = path.resolve(path.dirname(prev), url)
           fs.access(filePath, fs.constants.F_OK, (err) => {
             if (err) {
               console.log(err)
-              done({ file: url })
+              return null
             } else {
               fs.readFile(filePath)
                 .then(res => {
@@ -279,7 +277,7 @@ export const getModule = (appPath: string, {
                 })
                 .catch(err => {
                   console.log(err)
-                  done({ file: url })
+                  return null
                 })
             }
           })
diff --git a/packages/taro-webpack-runner/src/util/chain.ts b/packages/taro-webpack-runner/src/util/chain.ts
index 5f4397274f25..bee6525d6caa 100644
--- a/packages/taro-webpack-runner/src/util/chain.ts
+++ b/packages/taro-webpack-runner/src/util/chain.ts
@@ -416,15 +416,13 @@ export const getModule = (appPath: string, {
         // 让 sass 文件里的 @import 能解析小程序原生样式文体，如 @import "a.wxss";
         const extname = path.extname(url)
         if (extname === '.scss' || extname === '.sass' || extname === '.css') {
-          done({
-            file: url
-          })
+          return null
         } else {
           const filePath = path.resolve(path.dirname(prev), url)
           fs.access(filePath, fs.constants.F_OK, (err) => {
             if (err) {
               console.log(err)
-              done({ file: url })
+              return null
             } else {
               fs.readFile(filePath)
                 .then(res => {
@@ -432,7 +430,7 @@ export const getModule = (appPath: string, {
                 })
                 .catch(err => {
                   console.log(err)
-                  done({ file: url })
+                  return null
                 })
             }
           })