You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <alllinks galcontinue="业务公式:新建操作" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Catogery:设计表单" missing="" />
      <page ns="0" title="MediaWiki页面分类" missing="" />
      <page pageid="3048" ns="0" title="“云表支付”业务逻辑设计" />
      <page pageid="545" ns="0" title="业务公式:事件" />
      <page pageid="511" ns="0" title="业务公式:删除操作" />
      <page pageid="470" ns="0" title="业务公式:原理讲解" />
      <page pageid="494" ns="0" title="业务公式:参数说明" />
      <page pageid="543" ns="0" title="业务公式:子数据源" />
      <page pageid="490" ns="0" title="业务公式:快速入门" />
      <page pageid="530" ns="0" title="业务公式:报错操作" />
    </pages>
  </query>
</api>