Abstract: With the development of Internet technology, Web application system have been widely applied in various industries, and the service population of the system is also more extensive. In order to improve the service quality of the system, it is necessary to study and summarize the methods for the system testing. Combing with the practice testing in the 12306 Internet ticketing and reservation system, this article summarized the main test methods of Web application system from 6 aspects: function, performance, user interface, compatibility, security and interface.