<view class="is_ad" >

<ad-custom class="ad_item" unit-id="adunit-81fe616e13xxxx"  @load="adLoad" @error="adError" @close="adClose"></ad-custom>

</view>

.is_ad{ position: relative; margin-bottom: 10rpx; border-radius: 32rpx 48rpx 0 0 ; overflow: hidden; width: 100%; min-height: 322rpx;}

手动改一下width，它就又没问题了