A hinge structure for a vehicle open/close body, in which a long hinge member supporting the open/close body is rotatably disposed in an opening portion of a vehicle body and the hinge member rotates according to an opening and closing motion of the open/close body, wherein a cover member for covering the hinge member is disposed in the hinge member; and wherein a shape of an outer periphery surface of the cover member facing a corner portion of the opening portion is formed in a shape following a shape of the corner portion.