现如今,在计算机领域中,网络技术发展迅猛,与其息息相关的网络安全性问题便越发的重要,这也进一步成为了人们关注的焦点。安全隐患是威胁计算机网络的一大弊病,尽快找到有效方法,确保计算机网络安全迫在眉睫。文章主要对计算机网络安全进行分析,从其存在的问题入手,对其相关防御措施展开讨论。从而提升社会对计算机网络安全的重视,望对网络安全问题有所贡献。 Nowadays, in the field of computer, the rapid development of network technology and the increasingly important issue of network security are becoming more and more important, which has become the focus of people’s attention. Security risks are a major threat to the computer network, as soon as possible to find effective ways to ensure that computer network security is imminent. The article mainly analyzes the computer network security, starts from its existing problems and discusses its related defense measures. Thereby enhancing the social emphasis on computer network security, hope to contribute to the issue of network security.