To meet the target of maintaining LNG supply during the winter peak period in northern China，two LNG berths are planned for the same harbor basin in Bohai Sea.In view of the complexity and relevance of LNG ships entering and departing ports under the joint operation of berth groups，it is necessary to study the joint operation and dispatching management of two LNG berths.Taking the first LNG double berth officially put into operation in China as an example，based on the ship maneuvering simulation method，this paper analyzes the influence of LNG ship navigation on the passage capacity of the waterway and the adaptability of adjacent berths，and puts forward the priority of LNG ships in and out of the port under the operation of double berths.On this basis，combined with the characteristics of LNG double berths operation and navigation management rules，the short-term and long-term ship joint dispatching organization model at different stages are formulated.The research results can provide decision-making basis for the navigation management of LNG double berths at a single port site.