Aiming at the problem that how to improve the passing efficiency in the operation of the Three Gorges ship lift,we carry out statistical analysis by the trial operation data of one year,improve upstream closing mode,the release gap water and adjustment of the start and stop values of water depth of ship chamber after finding the shortcomings.After one year of usage of the new process,we apply data comparison and the method of combining theory with practice,and analyze the process comprehensively from the aspects of safety,stable operation and machine efficiency.The results show that the three plans have effectively shortened the operation time of the mechanism and are feasible,but there is still room for optimization.Based on this,we put forward the related suggestions to develop the function of the Three Gorges ship lift as a fast passage through the dam channel.