With the completion of the Three Gorges project,the navigation channel in the upstream reservoir area has been significantly improved,the freight volume of the lockage increased rapidly,the contradiction between the capacity of ship lock and the demand for lockage turned increasingly prominent,and the Three Gorges navigation became a node restricting the further development of the Yangtze River navigation.The Three Gorges Navigation Authority conducts a research on the rapid maintenance technology of ship lock,the operation organization of ship lock,and the operation and maintenance of the ship lift.In order to further improve the capacity of the Three Gorges,Gezhouba lock and ship lift,and build modern navigation of the Three Gorges and create a new situation for navigation of the Three Gorges,this paper proposes technology research programs.