By means of numerical simulation and physical experiment,the energy capture and wave elimination performance of two types of arrangement of savonius type paddles for a new type of energy capture and wave attenuation floating breakwater are studied.By using STAR-CCM+numerical simulation software,the three-dimensional hydrodynamic model of floating breakwater is established and numerical simulation is carried out by calling overlapping grid,second-order time discretization and adding numerical iteration method.The physical experiment system of the breakwater is developed,and the energy absorption and wave elimination performance of the floating breakwater is tested.The results of numerical simulation and physical experiment are analyzed.The results show that the new type of floating breakwater has the largest energy harvesting power when the rotating frequency of the blades is close to the wave frequency,and the wave elimination performance of the parallel arrangement of the blades is better than that of the vertical arrangement of the blades.