With the rapid development of science and technology, the impact of computer and Internet technology on people's life and production is increasing, Currently, some criminals take use of computer network information security loopholes to steal important information cases. Based on this, the relevant departments should increase the attention on computer network information security, and constantly innovative ideas to protect information, the introduction of advanced virtual private network technology, upgrade the computer network information security level. This paper briefly analyzes the trends and application of virtual private network technology, and mainly discusses the application methods.