In order to meet the safety and reliability requirements of the future 200，000 DWT container ships entering and leaving the port，berthing and unberthing operation in Qinzhou Port，a ship maneuvering mathematical model is established based on the east channel and the 9# berth in the Dalanping port area. The effective tracks of ships entering and leaving the port and berthing and unberthing are analyzed through model calculation，and the safe navigation conditions of channel and whirling waters are concluded. The analysis results reveal that the current 100，000 DWT two-way navigable channel in the east channel of Qinzhou Port can meet the requirements of one-way navigable channel for 200，000 DWT container ships in the future under level 6 wind conditions，and the channel water depth needs to be further dredged to-16.3 m to ensure that ships can enter or leave the port while taking advantage of the tide. Through the navigation process simulation，it is suggested that when the ship enters the port，the speed of turning from the south section to the Sandun section should be controlled at 9 knots，and the rudder angle suggested to be 15°；while the speed of turning from the Sandun section to the Dalangping section should be controlled at 7 knots，and the rudder angle suggested to be 20°.Under the combination of shore wind and rising tide current，the ship’s departure turning track has an unexpected range，and the scale of turning water area along the flow direction needs to be expanded from 790 m to 1 200 m.