Web数据挖掘是将数据挖掘技术和理论应用于对WⅣW 资源进行挖掘的一个新兴的研究领域。本文论述了Web数据挖掘的发展现状、发展趋势以及将来可能的研究方向，并简单介绍了个性化搜索引擎的一些情况，最后论述了web数据挖掘在个性化搜索引擎中的应用。-Web data mining is data mining technology and theory applied to the W ⒓ W resources to carry out excavation of an emerging research field. This article discusses the development of Web data mining the status quo, development trends and potential future research directions, and a simple introduction of personalized search engines some of the situations, and finally discusses the web of data mining in personalization search engine applications.