Abstract: The exponential growth of the world wide web and the complexity of web applications in recent years give rise to a need of systematic methods and models to support the development of web applications. Navigation modeling of web applications is its special requirements. web applications navigation model based on statechart is presented in this paper, which describes the navigation properties of web applications clearly. The concept of navigation tree and its construction algorithm are also given, that can analyze the web applications navigation properties such as reachability, deadlock, etc.