Abstract: Effects of the geometric sizes and the material properties of plateformpile system on the wave patterns and energy are analyzed through the finite element calculation of wave propagation in platformpile system. Effects of the vibration frequencies,the loading area, the receiver locations and the neighboring piles on wave propagation are also discussed. The results show that the geometric sizes of platform have great influences on wave propagation.Because the different type of waves with different incident angles are reflected from the boundaries,the patterns of reflected waves are complex.The reflections from the boundaries not only influence the response of a platform surface, but also form a new incidence into and reflection from the boundary between a pile and a platform. It is very difficult to distinguish the waves reflected from the pile under the influences of boundary reflection.