Taking the construction of automobile Ro-Ro terminal of Dalian port at Dayao bay north shore for example,based on statistics of car-carrier ships calling at Dalian port in recent years,focusing on the enlargement tendency of ships,and with reasonably oriented berth level,berth numbers and reserve capacity,we make sure that the proposed project can be adapted to worldwide main car-carrier fleet and the developing ship type,to enhance the competitiveness of Dalian port in the marine automobile transportation competition. Based on the above-mentioned materials,and according to the domestic prevailing specifications and actual ship type calling at berth,we carry out the study of quay length and quay surface elevation,to serve as reference for similar projects.