Based on the physical model experiment,we study the wave overtopping of sloping seawall influences of the height of wave wall,the length and height of platform,the wave height,the wave dissipation pier，etc.on the wave overtopping under the irregular wave,which shows that the wave wall,platform and wave dissipation pier can reduce the wave overtopping.Comparing the result calculated by the exiting formula on the overtopping and that from the physical model test,we propose the recommend calculation method for the wave overtopping.