图示：

第一步：

 <el-carousel :class="changeIndex==0?'leftBtnNone':changeIndex==imgDataList.length-1? 'rightBtnNone':''"   height="546px" :autoplay="false"  @change="changeNext"><el-carousel-item v-for="(item,index) in imgDataList" :key="index">//内容</el-carousel-item>
</el-carousel>

第二步：

data() {return {imgDataList: []，changeIndex:'   '}},

第三步

methods：{changeNext(e){this.changeIndex=e},}

第四步

<style scoped>
/deep/.leftBtnNone {.el-carousel__arrow--left {display: none !important;}
}
/deep/.rightBtnNone {.el-carousel__arrow--right {display: none !important;}
}
</style>