Abstract: To study flood deposits in modern estuarine and deltaic areas is not only a contribution to the recognition of the paleoflood events in the geologic period, but also an endeavor to understand more about density current in the offshore area. In this paper, we briefed the latest progress of flood event study over the world and discussed the depositional proxies which may be used for identifying paleoflooding events. Problems were raised for further study. It is suggested that high resolution research of flooding events and their deposits be launched in a relatively stable deltaic area with low sedimentation rate.