接口给你返回一个集合，然后如果这个集合里面的status==2，就把这一行的复选框给选中

注意：

绑定的ref
:row-key="getRowKeys"

this.$refs.multiTableInst.toggleRowSelection(this.list[i], true);

 <el-table :data="list" ref="multiTableInst" style="width: 100%" header-cell-class-name="approve-thead" class="approval-table" @select="getSelection" @select-all="getSelectionAll" :row-key="getRowKeys"><el-table-column type="selection" width="55"> </el-table-column>
</el-table><script>
export default {data() {return { list: [], };},created() {this.getAccountListmeth();},methods: {getRowKeys(row) {//唯一值，一般都是id return row.code;}, // 获得列表async getAccountListmeth() { this.$nextTick(() => { for (let i = 0; i < this.list.length; i++) {if (this.list[i].status == 2) { this.$refs.multiTableInst.toggleRowSelection(this.list[i], true);}else{this.$refs.multiTableInst.toggleRowSelection(this.list[i], false);  }} });},