Based on Biot seepage consolidation theory and wave diffraction theory,the analytical solutions to the diffracted water wave potentials and the wave-induced seepage pressures referring to vertical breakwater resting on permeable elastic seabed are derived by applying the eigenfunction expansion approach,and then the wave-induced lift force and overturning moment caused by the seepage pressure on the bottom of vertical breakwater are accordingly evaluated and compared with the direct wave force and moment.The numerical results demonstrate that in certain condition,the wave-induced seepage loads may have the same order of magnitude as the direct wave loads.The variation of incident wave angle,porous on the front surface of breakwater and structure geometry under ocean condition may have some influences on wave-induced seepage loads,especially on the wave-induced seepage overturning moment.