The calculation of attack zone of Air-to-Air Missile (AAM) is an essential process in the launching of AAM.The concept of attack zone of AAM after launching is presented to compensate for the limitation of the traditional three-line attack zone.Based on the mathematic models of an AAM,including pneumatic model,kinetic model and so on,the attack zone of AAM after launching under typical condition is calculated out by using very fast simulation algorithm,and the function of it in air combat is also analyzed.The simulation results indicate that:The attack zone of AAM after launching is different from the traditional attack zone and can provide better Situation Awareness (SA) information for the pilot,which is helpful for improving the combat efficiency.