里层得复选框会多出来id，只想要复选框怎么改？

Question

<el-checkbox-group v-model="checkList">  <el-checkbox :label="emr.hospital_id"  :key="emr.hospital_id"                      @change="checkbox(emr)" v-model="check"                       style="float: right;margin-top:49px"                        v-if="showSelected===true"         >         </el-checkbox>  </el-checkbox-group>const hosList = [];  for (let i = 0; i < this.emrList.length; i++) {     hosList.push(this.emrList[i].hospital_id);   }  this.checkList = val ? hosList : [];这段代码写完之后，点击外层得得复选框，里层得复选框会多出来id，只想要复选框怎么改？