Abstract: Along with the prosperity of e business in China,to win over more and more customers, each web site sets to develop the characteristics services successively. Under this situation, the method, "Clued and Directed Graph", was put forward in this thesis. By learning from the user's behavior, the method sets up the quantified evaluating model for requirements of the user to achieve the goal for forecasting the user's next motion at a certain location of the web site and providing the user with the characteristics services in a deep level.