To analyze the state of near-shore bed load research,we take the deepwater ways where the mouth-bar exists in some domestic typical port areas as research objects.Besides,we make the physical modelling experiment and take wave,flow,water depth,the slope of channel excavation and other elements into account,so that we can study the effect of the movement of bed load in sandy coast with the interaction of wave and flow on the stability of the dredge-cut’s slope and analyze the condition of its stability,to serve as reference for the design of projects.