A project is constructed on island reefs，with poor wave cover conditions，strong tidal currents，and high sediment content，which is extremely unfavorable for the construction of a land-island transportation wharf. Therefore，the key technical difficulty in the water layout of this project is to find ways to cover the harbor basin，adjust currents，and reduce sediment deposition. Through the analysis of harbor construction conditions and model simulations，we put forward a design scheme of combining the close pile breakwater with the hydraulic structure of the wharf. During the construction of the project，the project has withstood the tests of typhoons and cold waves with good wave blocking effects. In this way，the construction difficulty is solved，and new design ideas are provided for the development and utilization of similar shorelines.