Xerces-C++是目前广泛使用的XML解析器，在利用它编写XML应用以处理包含中文字符的XML文档时会出现字符编码错误，如何正确解决这个问题，对于我们开发XML的应用程序非常有用。本文给出了正确处理的方法和实现类的代码，希望能对大家有所帮助。-Xerces-C++ Is widely used XML parser, XML in the preparation of applications to use it to deal with the Chinese characters that contains the XML document will appear when the character encoding errors, how to correctly solve this problem, for us to develop XML applications very useful. In this paper, the correct way to deal with category code and the realization of the hope that it can be helpful to everyone.