Along with the development of the Internet, university network system has a lot of potential safety problems. Information security level protection system has been included in the state council of the People's Republic of China concerning the strengthening information security work among the opinion ". In information system adopt to enforce the protection of classification of development idea. In this paper, starting from level protection model to explore network information safety system, analyzes the university. Aimed at sprang out of college, hope more attention, network information safety for university teachers and students a secure network home.