Frequent ship berthing, management loopholes and some unpreventable factors make the accident of the berthing collision to happen quite often. At present, it is not clear that the force and displacement characteristics of the wharf under the abnormal berthing, making the lack of theoretical basis to damage assessment.A high-pile wharf nonlinear mathematical model is established in ANSYS finite element structural analysis software,in order to carry the test and inspection on-site out contrapuntally. The pile-soil interaction and the impact of rubber fender body buffer is taken into account while this thesis simplifies the structure and hierarchical foundations reasonably. The model results are compared with the actual wharf collision damage. The relative relationship of the extreme collision forces is analyzed briefly and the displacement is compared. The conclusions are got that the model can reflect the wharf damages in this collision case.