The double-line five-step ship-lock of Three Gorges Project (TGP) is an extra-large navigation structure with the maximum design total head and single-step delivery head in the world and complicated technical problems.The shiplock is a challenging and world-class project integrating the advanced techniques and equipment,the up-to-date technologies and materials,as well as the advanced project management.Through 17-year construction and 9-year operation of the ship-lock,various difficulties in design,construction,equipment manufacturing and installation as well as system debugging have been overcome effectively.The project management ideas,management system,management methods,technological innovation and team building are summarized according to the management practice of the second stage main work of Three Gorges ship-lock. The double-line five-step ship-lock of Three Gorges Project (TGP) is an extra-large navigation structure with the maximum design total head and single-step delivery head in the world and complicated technical problems. The shiplock is a challenging and world-class project integrating the advanced techniques and equipment, the up-to-date technologies and materials, as well as the advanced project management.Through 17-year construction and 9-year operation of the ship-lock, various difficulties in design, construction, equipment manufacturing and installation as well as system debugging have been overcome. The project management ideas, management system, management methods, technological innovation and team building are summarized according to the management practice of the second stage main work of Three Gorges ship- lock.