The sheet-pile structure is used in a Shanghai ship lock.In order to choose appropriate solutions,we put forward the anchor sheet-pile by anchorage wall,anchor sheet-pile by inclined pile,inclined pile structure of elevated pile cap,and straight pile structure of elevated pile cap,and analyze the structures based on Plaxis finite element program.Through calculation,we get the structure’s displacement and internal force and the distribution of earth pressure.The calculation results show that the horizontal displacement of the anchor sheet-pile by anchorage wall and straight pile structure of elevated pile cap structure reach 60～70 mm;the horizontal displacement of inclined pile structure of elevated pile cap and anchor sheet-pile by inclined pile structure are only about 20 mm;the inclined pile structure of elevated pile cap can also reduce the effect of earth pressure,the earth pressure on the sheet-pile is smaller,and the bending moment value of the sheet-pile is the minimum.Inclined pile-elevated pile cap is more suitable for this project.