For the direct dynamic simulation of unmanned aerial vehicle (UAV) net-recovery system, the modeling methods of key components such as flexible belt and damper were discussed. The finite element model of UAV net-recovery system was developed based on LS-DYNA, and the system dynamic simulations in several different impact locations were conducted. The finite element model was valid judging from the experiment results. The simulation and experiment results have shown that this system has a good engineering adaptability and the modeling methods are universal to certain extent.