The three-dimensional dynamic response numerical model of the foundation-pile-superstructure system under the wave dynamic load is established for the shear dilatant marine foundation.Damage constitutive model is applied on the wharf structure.The law of the dynamic response in the wharf structure as well as foundation at various wharf elevations is analyzed.The results show that:the high-piled wharf is subjected to wave impact,with the maximum internal force and the most serious damage when compared with about 0.33 in clearance ΔhH;when the relative clearance was 0.5,the damage and internal force decreased significantly;when the relative clearance is greater than 0.42,the maximum equivalent stress in pile foundation decreases with the increase of height.Although the influence of soil around pile foundation is not very big change,but the upper structure has a larger power amplification effect,even a small amount of foundation deformation changes can also cause the destruction of the upper structure within the larger,therefore the design should consider the foundation-pile-superstructure wave synergy effect each other.In view of the nonlinear deformation characteristics of marine foundation,it is suggested to build a whole model for analysis,so as to make the design more scientific and reliable.