The semi-vertical and semi-sloping breakwater is widely used in breakwater project because of its advantages of “multi-purpose of one breakwater”.The outer sloping structure has strong adaptability to wind and waves,and has certain shielding effect on waves.The inside vertical structure can be used as wharf to realize mooring and platform operation functions.At present,there are few researches on semi-vertical and semi-sloping breakwaters in the code,and the wave dissipation effect and wave force reduction coefficient of sloping breakwaters are lack of theoretical support.In this paper,combined with engineering examples,a physical model test is carried out to verify,the measured wave data are compared with the calculated values of the wave forces in front of the vertical wall and on the top of the sloping wall in the code,the difference between the conclusions of the two methods and the results of model test is analyzed,and the values of wave force reduction coefficients at different locations are proposed,the structural stability is checked by the measured values of wave force test and some suggestions are given.The research results can provide reference for similar projects.