At present, with the rapid development and progress of China's economy and science and technology in all aspects, people's lives are increasingly inseparable from the support of network technology. The network has made a qualitative leap in the level and quality of people's lives. Under this condition, the network culture has gradually formed and brought new opportunities and challenges to the ideological and political education in colleges and universities. This paper focuses on the analysis of the defects and deficiencies of the ideological and political work in colleges and universities under the network environment, as well as the corresponding countermeasures.