For the structures of submerged breakwater which are widely used in practical engineering,this paper studies the interaction between wave and permeable submerged breakwater under regular waves through a series of sectional model tests.The relationships between the transmission coefficient of submerged breakwater and dimensionless factors are discussed.These factors include the ratio of submergence depth to wave height RC/H,the ratio of wave height to the square of wave period H/(gT2),the ratio of crest width to wavelength B/L,the ratio of the grain diameter of core material to wave height D/H and the slope of submerged breakwater m.Then the improved empirical formulas on the basis of previous researches are proposed to provide theory reference for the design of submerged breakwater.