The invention discloses a deviation-correcting reinforcement method for a high-rise building. The method includes the following steps that a plurality of deviation-correcting reinforcement devices are installed on a building base plate in a penetrating mode; the deviation-correcting reinforcement devices comprise protective piles and ejection devices, one end of each ejection device is ejected on a pile top platform at the top of the corresponding protective pile, and the other end of each ejection device is ejected on the upper surface of the building base plate; parts of original engineering piles at the small settlement side of the building are cut off, and the building can settle towards the small settlement side after the original engineering piles are cut off; and when the deviation-correcting tilting-back rate of the building is smaller than a preset value, downward pressure is applied to the building base plate with the ejection devices. The deviation-correcting reinforcement method has the advantages that loads borne by the original engineering piles can be effectively transferred after the original engineering piles are cut off through settlement limiting assemblies and the protective piles, sudden and quick sinking of the structure is avoided, and structure safety is guaranteed; and the original engineering piles not cut off can be reversely pressed by the ejection devices, settlement adjusting can be performed actively, and the purpose of deviation-correcting reinforcement can be achieved ultimately.