Given that the new broken-line layout of the approach channel is likely to restrict ships’ passing through the lock，this study conducts a simulation test on the maneuvering of ships’ passing through the upstream approach channel. It utilizes a full-mission large ship maneuvering simulator to build an electronic chart display and information system（ECDIS）and a visual system，develop a mathematical ship motion model，simulate the navigation environment，create a simulation test model of a proposed project，analyze the ship maneuvering theory，and perform calculations. Then，it analyzes the simulation test data to verify the safety and maneuvering convenience of the ships passing through the lock and provide suggestions on the seaworthy conditions for ships during the operation period. The following observations can be made from the test results：1）The layout of the broken-line upstream approach channel of the Linhuaigang double-line ship lock is reasonable. 2）The distribution length of the left warning partition piers can meet the passing-through requirement of 2 000-ton ships after appropriate adjustment. 3）The personnel concerned should pay attention to the meteorological conditions during the operation period to ensure the safe passing-through of ships.