The axial azimuth influences directly the action of the berthing ship on the wharf structure,and thus influences the requirements on the structural design.So,it is necessary to make an optimization analysis on the axial azimuth of wharf for its influence on ship load and corresponding requirement in the structural design.Based on the practical engineering,a method named stratified flow factor is proposed to determine the optimum axial azimuth for wharf.This method and other two traditional methods are analyzed comparatively.Meantime,the relationship among the major factors of ship load,current velocity and axial azimuth is studied.The analysis result shows that the optimum axial azimuth is different from the three methods mentioned in this paper.The method of stratified flow factor is recommended for its more reality.