Abstract: Interbank market, as a complex economic system, can analyze topology and dynamics characteristics of the networks structure of interbank market based on complex networks. Therefore, on the basis of the random and optimizing mixed existence connection pattern between bank market network nodes, this paper establishes the random scale-free mixed evolution network model, extends random scale-free mixed evolution network model, and respectively studies these distributions of the networks structure of interbank market through the computer simulation. The results show that random scale-free mixed network of the interbank market evolves eventually to BA scale-free evolution network from random evolution network along with the strength increase of the preferential behavior of interbank market through theoretical analysis and simulation experiment.