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>
    <allimages aicontinue="D26.png" />
  </query-continue>
  <query>
    <allimages>
      <img name="Bi_system_importent.gif" timestamp="2008-08-02T12:33:26Z" url="http://wiki.blueidea.com/images/b/bf/Bi_system_importent.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Bi_system_importent.gif" ns="6" title="文件:Bi system importent.gif" />
      <img name="Bi_system_know.gif" timestamp="2008-08-02T12:55:14Z" url="http://wiki.blueidea.com/images/8/85/Bi_system_know.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Bi_system_know.gif" ns="6" title="文件:Bi system know.gif" />
      <img name="Bi_system_know2.gif" timestamp="2008-08-02T12:56:34Z" url="http://wiki.blueidea.com/images/e/e2/Bi_system_know2.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Bi_system_know2.gif" ns="6" title="文件:Bi system know2.gif" />
      <img name="Blueidea-logo.png" timestamp="2010-11-25T03:33:53Z" url="http://wiki.blueidea.com/images/8/89/Blueidea-logo.png" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Blueidea-logo.png" ns="6" title="文件:Blueidea-logo.png" />
      <img name="Border-box-model.gif" timestamp="2007-09-05T08:17:15Z" url="http://wiki.blueidea.com/images/e/ed/Border-box-model.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Border-box-model.gif" ns="6" title="文件:Border-box-model.gif" />
      <img name="Colinivy_bbs_attach_ie8.jpg" timestamp="2009-05-11T08:15:23Z" url="http://wiki.blueidea.com/images/5/56/Colinivy_bbs_attach_ie8.jpg" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Colinivy_bbs_attach_ie8.jpg" ns="6" title="文件:Colinivy bbs attach ie8.jpg" />
      <img name="Colinivy_case_post.gif" timestamp="2009-04-27T03:25:55Z" url="http://wiki.blueidea.com/images/5/5d/Colinivy_case_post.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Colinivy_case_post.gif" ns="6" title="文件:Colinivy case post.gif" />
      <img name="Colinivy_case_share.gif" timestamp="2009-04-27T03:39:25Z" url="http://wiki.blueidea.com/images/d/d8/Colinivy_case_share.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Colinivy_case_share.gif" ns="6" title="文件:Colinivy case share.gif" />
      <img name="Colinivy_case_upload.gif" timestamp="2009-04-27T03:27:39Z" url="http://wiki.blueidea.com/images/3/32/Colinivy_case_upload.gif" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Colinivy_case_upload.gif" ns="6" title="文件:Colinivy case upload.gif" />
      <img name="Css20.rar" timestamp="2012-06-11T04:10:39Z" url="http://wiki.blueidea.com/images/f/fa/Css20.rar" descriptionurl="http://wiki.blueidea.com/index.php?title=%E6%96%87%E4%BB%B6:Css20.rar" ns="6" title="文件:Css20.rar" />
    </allimages>
  </query>
</api>