By physical model experiment which is performed under irregular wave and adopts accropode blocks on a sloped revetment,we study factors which affect the stability of accropode blocks including mode of placing,placing density,as well as the slope gradient,and obtain the void ratio of the revetment P under different modes of placing.We also give the value range of stability parameter KD under different placing modes of accropode blocks,density of accropode blocks and slope gradient.In addition,overtopping data is also analyzed,which may serve as reference for future design.