It is difficult to implement the traditional pile foundation permeable breakwater in frozen areas.In order to meet the requirements of coordinated development of engineering construction and ecological environment，this paper proposes a kind of permeable breakwater of the inclined baffle for frozen areas and studies the wave absorbing effect and mechanical performance of the permeable breakwater under the action of irregular waves by physical model test.The results show that when there is a strong crossing wave，the transmission wave height consists of crossing waves and permeable waves，and the transmission coefficient decreases with the increase in water level.The model test proves that the permeable breakwater of the inclined baffle has an excellent wave absorbing effect，and the force of the baffle structure is uniform.