In order to investigate the obstacle-breaking capabilities of multi-rotor UAVs,this paper establishes a multi-rotor UAV efficiency evaluation index system based on the UAV obstacle-breaking combat environment and combat mission requirements.The overall effectiveness evaluation model and the sub-item capability evaluation model are established hierarchically by using correlation and weight analysis.Finally,taking five different types of UAVs as examples,this paper calculates the single-point obstacle-breaking efficiency of UAVs at different proportions of target obstacles,and gives the capability analysis results and suggestions of different multi-rotor UAVs based on the analysis of task completion time.