The paper draws on the theory of complex networks, puts forward an evolutionary model to solve the evolutionary problem of equipment maintenance support force systems, whose partial information are only known in the reality. Firstly, we abstract equipment maintenance support force systems into complex networks, and then define six network parameters. Secondly, we describe the network evolutionary steps. Finally, a dynamic evolutionary model whose parameters can be flexibly set, is used as the test object. We discuss various network parameters under three kinds of selection probability. The parameter values demonstrate the feasibility of the evolutionary model, and illustrate the model can provide auxiliary decision for commanders to develop support programs in the pre-war.