1.首先找到一个能够下载svg图标的网站，例如iconfont或iconpark。

Tip:图标网址iconpark：ByteDance IconPark

 2.选择好点击批量下载，下载一个压缩包。将下载后的压缩包解压之后就是我们选择下载的svg文件。如下图

 3.打开将svg文件转成base64的网站，因为在小程序中不能直接使用svg文件，得将其转成base64格式得数据作为标签得background_image得数据。

Tip:转base64网址：图片在线转换Base64,图片编码base64

打开如下：

 

 

4.具体使用如下：

      <view >
        <image class="imgs1" mode="aspectFill"></image>
        <image class="imgs2" mode="aspectFill"></image>
      </view>

<style lang="less" scoped>
.imgs1 {
  height: 45rpx;
  width: 45rpx;
  background-image: url('data:image/svg+xml;base64,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');
}
.imgs2 {
  height: 45rpx;
  width: 45rpx;
  background-image: url('data:image/svg+xml;base64,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');
}
</style>

效果如下