Abstract: To investigate the handover of guidance power for intermediate range air-to-air missile to other fighters in multi-aircraft cooperative air warfare,a new concept named guidance superiority is proposed.It is in token of the cooperative guidance ability of fighters in the formation,so as to provide assistant decision-making of selecting a new guidance platform for the missile.The calculation method of guidance superiority is discussed,based on synthesizing the situation(including angle,distance and velocity) and the fighter capability of both sides in the warfare.Two modes of guidance switch are given.The virtue and the flaw are analyzed for each mode.The feasibility and the validity of the method are validated by the application example.