In view that more and more high-pile wharves are constructed in the earthquake and deep water zones in some countries,the influence of hydrodynamic pressure on the dynamic performance of high-piled wharf in deep water become an urgent research subject.However，there are few research on the subject both at home and abroad,and it is lack of calculation method for the hydrodynamic pressure on high-piled wharf in deep water and earthquake zones.Based on the added water mass theory,p-y curve method is used to simulate the pile-soil interaction,and simplified Morison formula is adopted to calculate the hydrodynamic pressure.So the dynamic performance indicators are compared when the hydrodynamic pressure is considered or not,under the action of the earthquake.The results show that the hydrodynamic pressure not only has an impact on the vibration characteristics of the structure,but also has a greater impact on the structure’s dynamic performance.Therefore,the hydrodynamic pressure should be taken into consideration in the seismic design for the high-piled wharf in in deep water and earthquake zones.