According to the periodic changes of water level in the Three Gorges Reservoir area,the traditional slope-buttress anchorage structure is affected by the surrounding soil erosion,which leads to the serious deterioration of the structural design stress conditions,and the exposed high strength concrete structure is easy to cause the damage of the bottom of the ship.This article is based on the actual project and takes the 5,000-ton dry bulk cargo ship as the representative ship type under the environmental conditions of the water flow velocity of 1.0 m/s and the wind velocity of 22.0 m/s once every 50 years in the Three Gorges Dam area.The design of the slope-buttress anchorage structure for large ships in the dam area is studied.The slope-buttress anchorage scale,ship berthing mode,mooring force calculation,slope protection structure,construction technology and other aspects are systematically discussed.The design method of setting protective belt on both sides of mooring pile,arranging mooring facilities as embedded structure,and the top of mooring pillar not exceeding the slope surface is adopted.The results show that the structure of anchorage position against slope can not only meet the requirements of anchorage structure stability,but also effectively prevent water loss and soil erosion around the structure.It can be replicated and promoted in the construction project of ship mooring facilities in the reservoir area with large water level drop and small water flow velocity.