The online selection system is designed to enable students to conduct classes through the Internet anytime, anywhere, for the Senate, teachers and students in the needs analysis, the system comprises three modules: Module classes students, teachers management module, the Senate Management Module. One of the three modules of this paper, a detailed analysis, presented its design ideas, methods, database development, systems and applications, and other relevant information, and matching the corresponding function to achieve interface. The system is a typical management information system (MIS), including the development of its database background to the establishment and maintenance, and front-end application development aspects. With regard to the former, it requires to establish data consistency and integrity of strong, good for data security. For the latter, it requires application fully functional, easy to use and so on.