In recent yearswith the complete upgrade of different kinds of aviation weapon equipment different academies may have different definitions on the functions of the fire control system.In this paperthe function of the fire control system in air combat is discussed with its future development direction.Firstthe nature of fire control system and its functions are analyzed in detailand the role of it in the airborne system is discussed.Secondthe demand to the fire control system is proposed considering the operational requirementsand the effect of the system on improving the operational effectiveness is presented.Finallythe conclusion is proposed that the integration of command and control and the intelligent fire control system should be developed jointly to meet the demand of future combat.