In view of problems of low efficiency,low level of intelligence,and relatively backward management and maintenance modes in the operation and maintenance of ship lock,we conduct research on key technologies for smart management and maintenance of ship lock,including building information modeling(BIM) data governance and integration,intelligent control of ship lock operation,real-time perception of ship lock health status,intelligent monitoring of channel siltation,and digital inspection of ship lock.We use internet of things(IoT),BIM,geographic information system(GIS),big data and other technologies to build a smart ship lock management and maintenance system,and apply it in Babao ship lock project in Hangzhou.The results show that compared with the traditional ship lock management and maintenance mode,key technologies of smart ship lock management and maintenance can effectively improve the level of ship lock operation and maintenance,increase the maintenance efficiency of ship lock facilities and equipment,and realize the digital management,visual display,and intelligent application of ship lock maintenance information.