To study the influence of the axial rigidity coefficient on the bending moment of the high-pile wharf,according to the fact that different axial rigidity coefficients are corresponding to different bending moments,we introduce the dimensionless bearing relative coefficient α to research systematically the influence of α on the bending moment under different load distributions.It is concluded that the axial rigidity coefficient mainly influences the bending moments within the range of 0～1.5 side span,the longer the cantilever,the smaller the effect;there is a linear relation between α1/3and α23to the bending moment.By the linear fitting,we find the influences of α on the bending moment under different load distributions,and let the designers and researchers better understand the relationship between the bending moment and axial rigidity coefficient.