As the main protection part of the wharf structure，the breakwater plays an important role in supporting the stable and reliable operation of the wharf.The layout and structure selection of the breakwater are the key and difficult points of the breakwater design work.Based on specific projects，this study compares the feasibility and economy of different breakwater layout and structure schemes under complex natural conditions such as strong waves and sudden siltation.According to the comprehensive analysis results，the study proposes the layout of arranging the breakwater head outside the surf zone and puts forward the combined structure scheme of rock slope breakwater in deep water areas and concrete single sheet-pile breakwater in shallow water areas，which has excellent economic benefits.