In order to resolve the conflict among airplanes in free flight,the study proposed to examine a genetic algorithm to quickly solve the best route.The genetic algorithm was considered to be a simplification,generalization and strong robustness.By applying the genetic algorithm,the conflict relief among multi-planes can be resolved respectively by altering the heading,speed,and the effective flight mechanism when multiple airplanes are flying relatively at the same time.The simulation results show that the al...