The invention discloses a long segmental structure of an offshore high-piled wharf; pile tops adopt a hinge joint mode to reduce the bending moment of piles generated by temperature deformation and meet the requirement of pile top connection of construction under the severe condition of offshore deep water and storms; fork piles or inclined piles more than 25 m away from a temperature deformationbalanced line are arranged by adopting small horizontal included angles to reduce the axial force of the piles generated by the temperature deformation; fork piles or inclined piles less than or equal to 25 m away from the temperature deformation balanced line can be longitudinally arranged to improve the capability of resisting longitudinal horizontal force of the wharf; the first bent span space of two segmental edges is appropriately reduced to reduce the design internal force of stringers, beams and piles; and rail connection structures of a plurality of small segments, with intervals of less than or equal to 20 mm, are adopted at an expansion joint to meet the working requirement of the expansion joint for the mechanical smooth transition of a rail. The long segmental structure of the offshore high-piled wharf successfully solves the technical problem of the long segmentation of the wharf, and the segmentation length is usually more than 120 m so as to reduce the horizontal forceloaded by the bents, reduce the construction cost, and facilitate replacing steel pipe piles by adopting large tubular piles (which contain PHC piles).