Abstract: Optimum selection of the schemes is one of the key problems in reclaiming projects in the middle and low shallow beaches.Therefore,the interior layout is very important in reclaiming projects.But there is lack of further research about interior layout which can determine reclaiming projects′ deposition rate.Taking the reclaiming project(total-scale is about 148.7 km2) along the east shore of Nanhui as the example,we studied some important issues such as methods of siltation promotion,choices of interior layout,scales of gaps,etc.,thus providing the basis for the layout of the reclaiming project in Nanhui and offering references for similar projects by means of 2-D numerical tidal models and empirical siltation promotion formulas.The research results show that the better way is to use the semi-open methods of siltation promotion and the multi-districts of interior layout with moderate-scaled gaps,and that the scale of gaps should meet the suitable velocity.