el-table 嵌套
<el-table border>
<el-table-column width="150">
<el-table-column label="">
<el-table-column label="12">
<el-table-column label="">
</el-table-column>
</el-table-column>
</el-table-column>
</el-table-column>
<el-table-column>
<el-table-column label="">
<el-table-column label="23">
<el-table-column label="">
</el-table-column>
</el-table-column>
</el-table-column>
</el-table-column>
<el-table-column>
<el-table-column label="">
<el-table-column label="45">
<el-table-column label="">
</el-table-column>
</el-table-column>
</el-table-column>
</el-table-column>
</el-table>
效果图