The existing first line lock of Dayuandu navigation and hydropower project cannot meet the shipping requirements,and the second line lock should be built on the side.The hydraulic system of the first lock has some problems,such as large pressure loss,slow dynamic response,low efficiency,and limited automation.To achieve high efficiency,high dynamic response,energy saving,safety and full automatic control,we adopt pump control and optimize the synchronization control strategy on the second lock’s hydraulic control system.The miter gate satisfies the performance requirements of the moving conditions.The reasonability and innovation of the hydraulic system are proved by the experimental results.