In order to explore the morphological changes of sandy shoals under the action of regular waves,we construct the evolution process of sandy shorelines section in the wave flume.It is found that under the action of regular waves,sand shoals will have sand bar peaks,and there is an evolution process from single sand bar peak to double sand bar peak.Moreover,after formation of sand bars,they are not static,but reciprocate offshore and onshore with time.We also explore the influences of water depth,period and vegetation coverage rate on the variation of sandy shoals,and discuss and analyze the maximum scour depth,maximum siltation depth,scour area and siltation area.The results show that the increase of water depth will lead to the movement of sand dam towards the shore,the increase of the period will lead to the disorder of the shoreline,and the vegetation cover has a stabilizing effect on the shoreline.