Abstract: During the service of the offshore wind farm, there are some vessels out-of-control bumping the foundation structure, resulting in the changes in the bearing performance of the structure and causing serious safety hazards. Using nonlinear finite element method, combined with the material, geometry, and contact nonlinear problems involved in the process of the vessel bumping the offshore wind monopile foundation structure, and considering the pile-soil interaction, a vessel-wind turbine structure-soil full coupling model is proposed and adopted. Taking the actual offshore wind turbine monopile foundation structure as the research object, the ultimate strength of the structure before the vessel collision, the structural damage and the residual intensity of the structure after the damage are calculated, and the change law of the damage characteristics and the residual intensity of the foundation structure after the vessel collision is analyzed, and the relationship between the velocity and angle parameters and the residual intensity of the damaged structure during vessel collision is obtained. It is concluded that the quasi-static method has more advantages in dealing with convergence problems in the nonlinear solution process. and the dynamic explicit solution program can better solve the impact of various parameters on the collision result during the collision process, and it is necessary to conduct dynamic attenuation energy analysis firstly.