For the high-piled wharf,the damages of components in different positions,degrees and quantities have different effects on the dynamic characteristics of wharves.Adopting the probability sensitivity analysis,we study the changes of dynamic characteristics under conditions of concrete foundation pile damage and superstructure damage.By establishing the finite element model of the high-piled wharf,we analyze the influence of different parameters on the overall dynamic characteristics of the wharf.It is found that the structural dynamic property is sensitive to soil parameters,effective cross-sectional area of piles and elastic modulus of some piles.But,it is not sensitive to the damage of crossbeam and longeron.The change of the first third-order natural frequency of the wharf can be used as an index to reflect the overall damage.For frequencies above the fourth order,the vibration mode is the local mode of the pile itself,and its frequency value is obvious only for some piles.The correlation of the first three natural frequency is strong,while correlation between the frequency above the third order and the first three natural frequency is middle.