Abstract:From idea of destroying water particles’ trajectory of waves, this paper proposes a kind of permeable breakwater of layer upright wave board with holes. Focusing on the wave board layout and wave elements, we study the breakwater wave dissipation performance and its variation based on the physical model test. The test results show that the structure has good wave dissipation performance for the long wave, especially for big-wave deep waters. It is of great significance to promote the breakwater from the temporary breakwater measures into permanent structures.