In the process of information and network construction in Colleges and universities, it is inevitable to encounter a variety of network security threats, including the management problems in the university network security, causing serious damage to the network. Therefore, this paper studies on the problems of network security in colleges and universities. Firstly, this paper introduces the current threats and problems of network security management in colleges and universities. Secondly, it analyzes the network security strategy, mainly from the improvement of the network security management system and the development of network security technology program, in order to provide reference to improve the network security.