Abstract: According to specific characteristics of ship lock reconstruction project on Fuchunjiang River and the relevant rules of "Design Code for Filling and Emptying System of Shiplocks",on the basis of analyzing a great number of references,a type of the filling and emptying system and a detailed layout are put forward in the paper.The layout of the water inlet is especially studied and physical model tests(scale 1:30) are finished.The study results show that the layout of the new shiplock’s lock bottom longitudinal culvert filling and emptying system on Fuchunjiang River is suitable.And a scheme of the water inlet is reasonable through the old shiplock’s inlet and its lock chamber.Hydraulic indexes such as the filling or emptying time,vessel’s berthing conditions and flow conditions at the inlet and outlet can all fulfil design and criterion demands if the recommended open modes of the valve are adopted.