element-ui不适配vue3,官方已将vue3版本的更新为element-plus 解决: npm install element-plus --save 引入 import { createApp } from 'vue' import ElementPlus from 'element-plus' import 'element-plus/dist/index.css' import App from './App.vue' const app = createApp(App) app.use(ElementPlus) app.mount('#app') https://element-plus.org/zh-CN/guide/installation.html#%E7%89%88%E6%9C%AC