A wideband data link can be used as an information transmission channel and can act as a neural network in the modern battlefield. To adapt to the character of massive, diversified data transmission and time varying topol?ogy of battlefield network, it is necessary to construct virtual backbone networks by applying distributed algorithms. In this paper, a distributed algorithm called DCDS was proposed for constructing virtual backbone networks. In this algorithm, each node only needs to know its 2?hop neighbors rather than all nodes in network. Theoretical analysis and simulation results showed that compared with classical Wu or other algorithms, DCDS algorithm had lower mes?sage overhead and smaller virtual backbone size. and therefore it is more suitable for constructing virtual backbone network for battlefield wideband data link characterized by high capacity and dynamic character.