npm install node-sass --save-dev

npm install sass-loader --save-dev 

$ npm install -g cnpm --registry=https://registry.npm.taobao.org （安装淘宝镜像）

$ cnpm install node-sass --save （使用淘宝镜像安装node-sass）

$ npm install --save-dev sass-loader style-loader css-loader

{

 test: /\.vue$/,

 loader: 'vue-loader',

 options: {

  loaders: {

  'scss': 'style-loader!css-loader!sass-loader'

  }

 }

 } 

rules: [

  {

  test: /\.vue$/,

  loader: 'vue-loader',

  options: vueLoaderConfig

  },

  {

  test: /\.js$/,

  loader: 'babel-loader',

  include: [resolve('src'), resolve('test')]

  },

  {

  test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,

  loader: 'url-loader',

  query: {

   limit: 10000,

   name: utils.assetsPath('img/[name].[hash:7].[ext]')

  }

  },

  {

  test: /\.scss$/,

  loaders: ["style", "css", "sass"]

  },

  {

  test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,

  loader: 'url-loader',

  query: {

   limit: 10000,

   name: utils.assetsPath('fonts/[name].[hash:7].[ext]')

  }

  }

 ]

 } 

<style rel="stylesheet/scss" lang="scss"></style> 

<style lang="scss" scoped="" type="text/css"></style>