一、效果图以及效果：选中其中一行，其他行不会被选中，不会收影响

 二：代码：

<el-table ref="multipleTable" :data="tableData" tooltip-effect="dark" style="width: 100%>
  <el-table-column prop="files" label="文件名称"></el-table-column>
  <el-table-column label="操作">
    <template slot-scope="scope">
      <el-select  placeholder="更多" @change="changeSelect(scope.row.id)" v-model="state[scope.row.id]">
         <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value">
         </el-option>
       </el-select>
     </template>
   </el-table-column>
</el-table>

 data () {
    return {
      // table数据
      tableData: [
        {files: 'test.rvt', filesCode: '1514115864420768', user: 'admin', filesBig: '29.6Mb', jingState: '未开始', updateTime: '2016-09-21', id: '0'},
        {files: 'test.rvt', filesCode: '1514115864420768', user: 'admin', filesBig: '29.6Mb', jingState: '未开始', updateTime: '2016-09-21', id: '1'},
        {files: 'test.rvt', filesCode: '1514115864420768', user: 'admin', filesBig: '29.6Mb', jingState: '未开始', updateTime: '2016-09-21', id: '2'},
        {files: 'test.rvt', filesCode: '1514115864420768', user: 'admin', filesBig: '29.6Mb', jingState: '未开始', updateTime: '2016-09-21', id: '3'}
      ],
      // 下拉框数据
      options: [
        {value: '选项1', label: '发起解析'},
        {value: '选项2', label: '下载'},
        {value: '选项3', label: '删除'}
      ],
      state: {}
    }
  },
  mounted () {
    this.tableData.forEach(item => {
      this.$set(this.state, item.id, '') // 父、  子、  子的赋值
    })
  },

 // 下拉框的选择 可以打印看
 changeSelect (id) {
   console.log(id, this.state[id])
 }