Taking the 50 000 t bulk carrier in the condition of out of control vertical impact to a high-piled wharf at a speed of 1 ms for example，we simulate the impact process using the finite element software，acquire the corresponding energy change during striking and ship’s impact force time history curve，and compare it with the result of specifications.Meanwhile，analyzing the deformation and damage of wharf structure，we put forward measures to prevent the damage of wharf structure under the uncontrolled ship’s impact，which provide theoretical supports for the design，maintenance，and transformation of similar wharves.