The conventional vertical revetment faces a serious reflection of the front wall subject to wave action under the topographic restrictions，and the vertical caisson structure is uneconomical due to a large amount of reinforcement and concrete used in the front wall.In order to solve these problems，this paper carries out experimental research on different structures with openings under the wave action and calculates the bending moment distribution of the front wall.The paper uses the physical wave model experiment and finite element numerical simulation analysis to obtain the distribution of wave pressure and internal force of the front wall of the structure.The results show that the new porous structure can effectively reduce the wave pressure and avoid serious wave reflection superposition.At the same time，the front wall is only subject to part of the wave force，resulting in small internal force and deformation，and this trend is positively related to the increase in openings within a certain range.The reinforcement of the front wall component of the porous structure can be optimized to achieve economic results.