Based on the one-dimension stress wave theory, the integrity test of wharf pile under impulse load is simulated by ANSYS/LS-DYNA. Then one method of wharf pile test are induced by simulated signal processing. Finally, it’s shown that the simulated curves are in good agreement with those obtained from field measurements. Consequently, the numerical simulation and the method of wharf Pile test are correct and they will play an important role in increasing the accuracy of wharf Pile test.