According to the demands of the Design Code for Filling and Emptying System of Shiplocks and the layout characteristics of the shiplock of the water transfer project from the Yangtze River to Hanjiang river, this paper determines the type of filling and emptying system of Gaoshibei shiplock to be short-culvert concentrated filling and emptying system with no need of mitigative segment, calculates the area of the culvert transect at the valve and the key dimension of the filling and emptying system, and carries out hydraulic calculations of lock filling and emptying. The study results indicate that the hydraulic characteristics can fulfil the criteria and design demands and the valve opening modes are reasonable. Moreover, because there is no curtain wall at the lockhead, the double open ditch dissipation is suitable for Gaoshibei shiplock.