要保证计算机网络的安全,首先需要结合各种网络安全技术形成有效的网络安全防护体系,其次还需要动态地来看待网络安全问题,对病毒和网络安全的最新发展应该积极关注,最后还需要建立起有效和科学的管理制度。文章对电力系统中的计算机网络应用和系统的安全进行了分析。 To ensure the security of the computer network, we must first combine the various network security technologies to form an effective network security protection system, and secondly, we need to dynamically look at the network security issues. We should pay close attention to the latest developments in virus and network security and, finally, we need to establish Effective and scientific management system. The paper analyzes the computer network application and system security in power system.