图片URL写在了表格变量中
scop.row获取当前行的数据
<el-table>
<el-table-column label="" prop="">
<template #default="scope">
<el-image style="width: 70px; height: 70px" :src="scope.row.site" alt="" :fit="fill" ></el-image>
</template>
</el-table-column>
</el-table>