In Lanshan port area of Rizhao port,four 300 000 DWT crude oil wharves are arranged successively along one line. For all large crude oil wharf groups,this kind of layout is the first try. After a decade of development and construction,two 300 000 DWT crude oil wharves have already been constructed and the third 300 000 DWT wharf(with the capacity of 450 000 DWT)is under construction.Meanwhile,the fourth one is in the stage of feasibility study. During the construction much experience has been accumulated and applied to optimize the length,the layout of breasting and mooring dolphins,the structure and the style of connection to bridge approach of subsequent wharves.The article presents the progress and principles of optimization and analyzes the advantages and disadvantages of successive layout of wharves,in order to provide a reference for the design of similar projects.