The optimization of the landing performance of the aircraft mainly depends on the system multi-parameter optimization matching.The dynamic model of the landing gear landing process was established,and the sensitivity of each parameter to the optimization index was calculated,the landing gear optimized design combination variables were obtained.The combined weighting method was used to calculate the weights of each objective function to build the multi-objective optimization model.The adaptive genetic algorithm was used to optimize the landing gear landing process model with multiple objectives,the optimal landing gear parameters combination was obtained and the optimal design of landing gear system parameters was realized.The optimization results show that the maximum axial load of the buffer strut is reduced by 35.79%,the maximum vertical load of the wheel is reduced by 24.08%,the stroke variation of the buffer is reduced by 17.99% and the number of vertical damping vibrations is reduced by 15.38%.