Through the research and analysis of the variables and invariants that affect the efficiency of passing through the gate,it is concluded that the inherent regularity of the berthing time as a variable is that the difference of the berthing time is determined by the number of waiting stages outside the gate.This paper demonstrates the necessity of changing the current level-5 ship lock operation level-2 berthing and waiting lock into level-5 operation level-5 waiting lock navigation organization pattern,and the feasibility of adding necessary engineering measures on the basis of the original design navigation facilities of the Three Gorges project.It provides a reference for the Three Gorges navigation administration to carry out the navigation organization work of seamless connection between the waiting gate and the crossing gate,greatly improve the traffic volume of the Three Gorges hub (about 12 million tons on the basis of 2017 level year),and serve the development of the Yangtze River economic belt.