Tongzhou Bay Port waist sand two inning project is located in Jiangsu city of Nantong Province coastal sand waist,which encounters some new security risks in the construction process.Aiming at the characteristics of intertidal zone,this paper analyses the existence of security risks in order to propose a number of management measures with field actual situation,such as the signing of meteorological information service,working vessels selection,temporary waterway,gravel transport ship source control,inviting the local boatman pilotage and ship positioning installation tracking system and the establishment of ship system of self-help and mutual assistance.It is safety and controllable,which achieves the goal of zero accidents.