解决方法: 在子组件上加 v-if
<el-tab-pane label="标签页A" name="first"> <allList v-if="activeName === 'first'"></allList> </el-tab-pane> <el-tab-pane label="全部" name="second"> <allList v-if="activeName === 'second'"></allList> </el-tab-pane>