In order to enhance the assault and penetration capability of airborne forces,the multi-objective planning problem of heavy equipment airdrop formation of dual transport aircraft is studied.Firstly,the motion process of the cargo platform of heavy equipment airdrop is analyzed based on the separation method, and the dynamics model of the cargo platform is constructed on the basis of Euler iteration idea.Then,the spatial position model of the dual transport aircraft formation is constructed by analyzing the influence of the front aircrafts tail vortex on the rear aircraft.In order to determine the optimal solution of the relative position of the dual aircraft,the improved NSGA-Ⅱ algorithm is adopted,the dominance strength,the optimized elite strategy,the crossing operator based on individual grades in the population and the mutation operator based on Gaussian distribution are introduced,and the congestion degree is calculated based on variance,so as to obtain the final results.The simulation experimental results show that the optimized algorithm can improve the flight safety of the dual transport aircraft formation,and the airdrop points are denser with higher airdrop accuracy.