The utility model relates to a step-type hydraulic lift used for a jack-up platform and is characterized in that the step-type hydraulic lift comprises a pile fixing tube integrally connected with a platform deck, wherein a pipe leg penetrates through the pile fixing tube, and the lower end of the pile leg penetrates through the platform deck and is fixed to a seabed; an upper pile clamping device for locking and releasing the pile leg is fixedly arranged on the inner wall of the pile fixing tube, a plurality of lifting oil cylinders are connected to the bottom end of the upper pile clamping device, the bottom ends of the lifting oil cylinders are all connected to a lower pile clamping device used for locking and releasing the pile leg, and a pile locking device used for locking and releasing the pile leg is fixedly arranged on the inner wall of the pile fixing tube below the lower pile clamping device; and the lifting oil cylinders are all connected with a hydraulic system. The step-type hydraulic lift has a simple structure and low cost and can be widely used on sea jack-up platforms.