Abstract: Since entering the 21st century, computer information technology began to enter people's lives, and the development of all walks of life more closely. The widespread application of computer network has brought great convenience to people's production and life, but with the passage of time, the disadvantages of computer network also began to appear gradually, especially the network information security problems caused people's attention, on the current network technology point of view, hacker malicious attacks, the impact of viruses, etc. should be under the current social and technical background of computer information security Information technology is an important reason for the development of this paper, based on the actual situation, combined with the research status of the industry, the computer network technology security maintenance aspects of the content of in-depth research and analysis.