Abstract: With development of communicating technology and joint fighting military system, multiple elements state cyberspace composed by deferent subnetworks has been the main state of military information environment. In this space, the risk infectious rate, resistant ability, propagation rate are not the same among deferent element nodes, while the current simple networks model based on internet can not describe this factor efficiently. In order to solve this problem, this paper designs a multiple elements military state cyberspace model (MEMSC). The model refines the classic centrality value algorithm and defines a risk propagation factor and an infectious factor, thus the deference between MEMSC nodes in risk propagation can be described clearly. Based on the model, the rules of risk propagation are studied and simulated, and the research results can positively support cyberspace risk control and defense.