element图片回显是通过修改file-list属性的url属性实现的。

  <!-- 图片上传 --><el-form-item label="景区图片" prop="s_img"><el-uploadlist-type="picture-card":action="网址":on-change="handleChange":before-remove="beforeRemove":on-preview="handlePictureCardPreview"fit="cover":file-list="绑定值"multiple:limit="1"name="file"><el-icon class="avatar-uploader-icon"><Plus /></el-icon></el-upload><el-dialog v-model="dialogVisibles" width="300"><imgw-full:src="dialogImageUrl"alt="Preview Image"style="width: 80%; margin: auto"/></el-dialog></el-form-item>

回显： 

 

绑定值 = [{url: 图片路径,}];