.el-table th.gutter{
    display: table-cell !important;
}

 

 如果上面不行，获取数据时

getList().then(res=>{
    this.list=res.data.rows;
    this.$nextTick(()=>{
        this.$refs.table.doLayout();
        //给table加一个ref
    })
})

 

https://blog.csdn.net/weixin_38779534/article/details/103237918