In this paper, 3D modeling software is used to conduct structural modeling of skid landing gear of parachute landing recovery UAV, and then LS/DYNA analysis module of ANSYS software is used to conduct dynamic simulation analysis of the landing gear, which is used to simulate the structural working condition of the landing gear when the UAV lands at different attitudes and speeds and impacts the soil and concrete ground. Based on the changes of the momentum, deformation and stress of the landing gear during the simulation period, it is necessary to ground the UAV with a steady attitude Angle on the soil soft landing surface. At the same time, through the analysis of the maximum equivalent stress and safety factor of the landing gear structure at the moment of impact, the connection of the landing gear components is most vulnerable to impact damage, and it is necessary to strengthen the structure and carry out margin control on the structure, which provides theoretical guidance for the structural improvement of UAV recovery device in the future.