| Nowadays, digital library does not provide users with efficient, personalized service, in order to provide users with a more high-quality individualized one on one service, personalized recommendation techniques have emerged as an important research field of digital library content and get more and more attention.Firstly, this paper introduces the development of digital library personalized information service both at home and abroad, secondly, we give a detailed introduction about the web mining technology. Through the in-depth analysis of web mining process and research about data storage format features in digital library, this paper presents a recursive navigation pattern tree structure, and gives the specific algorithm for constructing the navigation pattern tree. And navigation pattern mining algorithm based on the navigation pattern tree is also given.Finally, this paper gives the concrete implementation for the personalized recommendation system based on navigation tree and navigation patterns mining algorithm. |