With the great improvement of the anti-jamming capability of the seeker,the probability that missiles break through "soft killing" defenses is increasing.There is an urgent need to develop an active interceptor system that can intercept and destroy the threats that have broken through the "soft killing" defenses,so as to improve the survivability of the aircraft.In view of the current situation of indeterminate orientation of the incoming threats,fast flight speed and short interception windows,this paper studies the key algorithms involved in multi-target interception decision-making,including shooting list generation,interception firepower assignment,real-time calculation of interception windows,automatic delivery instruction generation and other interception decision-making algorithms.It is proved that the designed active interception decision-making algorithms are feasible through closed-loop simulation of multi-target interception.