Based on the locations of communication command aircraft, jammer and radar, the interference effect evaluation indicators are designed. Considering the benefit of each jammer, the final objective function is determined and the jamming resource allocation decision is solved with the game theory. Feasibility and existence of the Nash equilibrium (NE) in this game are proved. An iterative algorithm of jamming strategy selection is designed and jamming resource allocation decision is solved. Simulation results show that the iterative algorithm of jamming strategy selection indicator proposed is a good solution to the radar jamming resource allocation problem and has certain significance for actual operational command.