讨论了 C3I通信子网的路由算法。在提出了通信延迟量概念基础上 ,考虑到 C3I通信子网各站点的通信重要度不同 ,提出了一种路由算法。从军事指挥体制及区域划分出发 ,文中还给出通信子网采用分层管理的路由计算方法。本算法对C3I通信子网的管理设计有参考价值 The routing algorithm of C3I communication subnet is discussed. Based on the concept of communication delay, a routing algorithm is proposed considering the different communication importance of each site of C3I communication subnet. Starting from the military command system and regional division, this paper also gives the routing calculation method of hierarchical management of communication subnets. This algorithm has reference value for the management design of C3I communication subnet