The layout of energy dissipater and the effect of energy dissipation of lock chamber sidewall corridor ditches directly impact the mooring force and berthing safety of the ship in the lock chamber. Based on the hydraulic model test of the filling-emptying system of Hongyanzi ship lock,we discuss the application effect of the mesh-type energy dissipation and optimum design of adding the energy dissipation cover in the medium and high water head scattered ship lock.By comparing the hydraulic characteristics of ship lock during filling and discharging,the hydraulic pressure of the lock chamber,and mooring conditions of ships,we find that the optimal design of adding the energy dissipation cover has a better performance.An operation scheme of the valve opening mode is also put forward.