The wave-induced pore pressure is a key factor in the prediction of the wave-induced liquefaction potential, which has been reported in the literature in conjunction with marine engineering (Sumer and Fredsøe, 2002). Most previous investigations for the wave-induced soil response have been limited to uncoupling model by linking wave models with seabed models through continuity of pressures at the seabed surface. In this study, we proposed a coupled model to link both wave and seabed models and provide a better understanding of the mechanism of the wave-seabed interactions. Based on the present model, we will investigate the difference between the existing uncoupled model and the present coupled model in the prediction of the wave-induced liquefaction.