我国计算机网络随着信息化时代的到来获得了巨大的发展,但是因为计算机和网络的脆弱性,一旦出现人为攻击和破坏,就会使网络信息遭受到巨大的损害和威胁。网络信息安全问题是一个重要的问题,应该引起人们的注重。本文对网络信息安全的主要威胁和防范措施进行了有效的分析和说明,最终带给计算机网络信息一个更加健康安全的环境,保障带给大众一个更加稳定有效的网络基础。 With the advent of the information age, computer networks in our country have made tremendous development. However, due to the vulnerability of computers and networks, once the man-made attacks and vandalism occur, the network information will be greatly damaged and threatened. Network information security is an important issue that should arouse people’s attention. This paper analyzes and explains the main threats and precautions of network information security, and finally brings a more healthy and safe environment for computer network information, which will bring a more stable and effective network foundation to the public.