The invention discloses a reverse deviation-correcting device and belongs to the civil engineering technical field. The device comprises two groups of steel plate hooks and a lifting jack. The steel plate hooks of a to-be-corrected large-scale structure are oppositely fixed on an original building, and the lifting jack is placed on the steel plate hooks in parallel. The to-be-corrected large-scale structure can be pulled to the original building by using the lifting jack to push the steel plate hooks, so that the large-scale structure and the original building can be vertically spliced. The device is simple in structure and convenient and rapid to operate, construction efficiency is greatly improved, construction cost is reduced, and the device can be widely applied to the civil engineering technical field. The invention further discloses a deviation-correcting method adopting the reverse inclined-correcting device.