Aiming at the water area layout of large bulk cargo terminal under the complex water conditions in offshore islands and reefs area，based on the preliminary research and design work of the supporting terminal project of the Zhejiang petrochemical refining-chemical integration project （phase I dry bulk），we analyze the key factors that need to be considered in the layout of terminals in offshore islands and reefs area. We have carried out hydrological tests and research on tidal current and sediment mathematical models，and proposed a comprehensive utilization plan for the F-shaped layout of the first-line and second-line terminals. Since the operation of the project，the design parameters of the terminals water areas can adapt to the complex current conditions，and can meet the requirements of navigating and berthing （un-berthing） of ships，thus the layout of the terminals is reasonable.