Abstract: Based on analyzing the multiple UCAV mission assignment characteristics,an integer programming based mission assignment method for multiple cooperative UCAVs is proposed.By designing the decision variables and formulizing the various constraints,a formulized model for multiple cooperative UCAV mission assignment is created.Then simulation experiments are made under SEAD scenario,which is the most classical mission of future UCAV.The simulation results show that the model can effectively resolve the mission assignment problems for multiple cooperative UCAV.