For solving the problems of low precision, equipment damage, and difficult searching in equipment and material airdrop, research on auto optimization of airdrop combination strategies. According to the theory of optimal control, build a control model with terminal constraints for the process of airdrop of equipment and materials. By combining qualitative and quantitative analysis, the precise delivery, error transmission and autonomous trajectory correction of different combination strategies under the error of airdrop are analyzed. The dropping combination strategy of different airdrop height is determined by using Matlab software to simulate the control model. The simulation results show that the model equation is concise and easy to simulate. At the same time, the control model can realize the precise airdrop of equipment and materials by controller’s independent trajectory correction, and the control model has high stability.