For the structures of floating breakwater which are used in practical engineering,we carry out the physical model experiments in the flume to study the dissipation effect of frame-type breakwater in the regular wave,and obtain the relationships between transmission coefficients and relative width of floating breakwaters,the number the row of pipelines and the nominal diameters of pipelines.The results show that the relative width is the main influencing factor for the wave dissipation performance of the breakwater.The rows number of pipelines and the nominal diameter of the pipelines also have significant impact on the wave dissipation.Considering the material and other factors,the model 3(6 rows,nominal diameter 40 mm)is recommended as the type of breakwater.