首先在components下面新建vue文件

<template>
  <div class="example-container">
    <el-breadcrumb separator="|">
      <el-breadcrumb-item
        v-for="(item,index) in breadList"
        :key="index"
        :to="{ path: item.path }"
      >{{item.name}}</el-breadcrumb-item>
    </el-breadcrumb>
  </div>
</template>
<script>
export default {
  data() {
    return {
      breadList: [] // 路由集合
    };
  },
  watch: {
    $route() {
      this.getBreadcrumb();
    }
  },
  methods: {
    isHome(route) {
      return route.name === "home";
    },
    getBreadcrumb() {
      let matched = this.$route.matched;
      //如果不是首页
      if (!this.isHome(matched[0])) {
        matched = [{ path: "/home", meta: { title: "首页" } }].concat(matched);
      }
      this.breadList = matched;
    }
  },
  created() {
    this.getBreadcrumb();
  }
};
</script>
<style scoped>
.el-breadcrumb span{
  font-size: 20px;
}
</style>

路由的name写成中文，将来要显示的就是这个，然后再需要的地方引入组件，设置下边距，就好了