<el-table
  v-show="isSwitch==true"
  :data="distributorArr"

部分代码。应该看得懂吧  ：data是绑值

<template slot-scope="scope">
  <el-select
    v-model="scope.row.id"
    multiple
    filterable
    allow-create
    @change="((val) => {distributorGroup(val, scope.$index)})"
    default-first-option
    placeholder="分销商分组">
    <el-option
      v-for="item in descriptionGroupList"
      :key="item.id"
      :label="item.level"
      :value="item.id">
    </el-option>
  </el-select>
</template>

distributorGroup(value, index) {
  var group = []
  for (var i = 0; i < value.length; i++) {
    var obj = {}
    obj.id = value[i]
    group.push(obj)
  }
  this.distributorArr[index].groupList = group
},