Pengshui reach of the Wujiang River is typical canyoned mountainous river with complex navigation condition and high head due to the step development.So,the type selection of the navigation structure and reasonable layout are the key technologies for the safe passing of ships through the dam satisfying the throughput capacity requirements.By analyzing comprehensively the hydraulic junction on similar canyoned rivers in China,we propose the scheme of “lock and ship lift with the middle channel” to well deal with the difficulties in the type selection and layout arrangement of the navigation structures.Through a lot of research on the trial sailings and project consultations,we probe into the problems such as the lower construction standards of the lock and ship lift than the design ones and the difficulty of joining the ship lift due to the water surface wave in the downstream approach channel.We also put forward suggestions on the regulation scheme including optimizing the run mode of the combined dispatching,scientific management,as well as extending the length of the guide wall in the downstream approach channel,etc.,to serve as reference for the administrative departments.