element表格两个表头和多个表头设置方法是一样的，下面给出了完整案例，直接复制运行即可看到效果，实现原理就是，表头内嵌套表头，很好理解。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<!-- 引入样式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<!-- 引入组件库 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
</head>
<body>
<div id="app">
<el-table :data="tableData" style="width: 100%">
<el-table-column prop="date" label="日期" width="150">
</el-table-column>
<el-table-column label="配送信息">
<el-table-column prop="name" label="姓名" width="120">
</el-table-column>
<el-table-column label="地址">
<el-table-column prop="province" label="省份" width="120">
</el-table-column>
<el-table-column prop="city" label="市区" width="120">
</el-table-column>
<el-table-column prop="address" label="地址" width="300">
</el-table-column>
<el-table-column prop="zip" label="邮编" width="120">
</el-table-column>
</el-table-column>
</el-table-column>
</el-table>
</div>
<script type="text/javascript">
var app = new Vue({
el: '#app',
data: {
tableData: [{
date: '2016-05-03',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}, {
date: '2016-05-02',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}, {
date: '2016-05-04',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}, {
date: '2016-05-01',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}, {
date: '2016-05-08',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}, {
date: '2016-05-06',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}, {
date: '2016-05-07',
name: '王小虎',
province: '上海',
city: '普陀区',
address: '上海市普陀区金沙江路 1518 弄',
zip: 200333
}]
},
})
</script>
</body>
</html>
效果：
