网上方法一大堆，试过之后找出了全部导入的简单方法

包含报错[sass] @use rules must be written before any other rules.

按照官方方法：

/* 只需要重写你需要的即可 */
@forward 'element-plus/theme-chalk/src/common/var.scss' with (
  $colors: (
    "primary": ("base": rgba(58, 143, 121, 1)),
    "success": ("base": #80DB7F),
    "warning": ("base": #e6a23c),
    "danger": ("base": #E88686),
    "error": ("base": #E88686),
    "info": ("base": #E7E7E7),
  ),
);

// 如果只是按需导入，则可以忽略以下内容。
// 如果你想导入所有样式:
@use "element-plus/theme-chalk/src/index.scss" as *; //全部导入打开

在vite.config.ts中的css添加：

  css: {
    preprocessorOptions: {
      scss: {
        additionalData: `
        @use "@/assets/styles/element/index.scss" as *;
        @import '@/assets/styles/index.scss';
        `//element的文件要在第一位，不然会报错 [sass] @use rules must be written before any other rules.
      },
      less: {
        javascriptEnabled: true
      }
    },
  },

mian.js里面引入css的要注掉

import ElementPlus from 'element-plus'
// import 'element-plus/dist/index.css'
app.use(ElementPlus)