Based on the physical model test, the article discusses the wave height distribution before and after the excavation of harbor basin and the impact of the excavation of harbor basin on revetment engineering.Results show that the impact of the excavation of harbor basin on design wave elements in front of revetment is very small, and that on the stability of accropodes and crown wall, wave overtopping and the scouring behind the dike is also small. The excavation of harbor basin has some impact on the bottom protection stone block, but not the cause resulting in the destruction of revetment.