The invention discloses a lifting device for a water conservancy project and a using method thereof, and particularly relates to the field of water conservancy projects. The lifting device comprises asupporting base and a lifting frame, wherein the lifting frame is fixedly arranged on the upper surface of the supporting base; a driving assembly is fixedly arranged on the side, close to the lifting frame, of the upper surface of the supporting base; and a limiting assembly is fixedly arranged on the side surface of the lifting frame. According to the lifting device, the limiting assembly is arranged, when an object is lifted, a cable is limited by a limiting ring, and moves upwards along with a hook, so that the cable is always in a vertical state, the relative stability between the liftedweight and the lifting frame is effectively guaranteed, the weight is prevented from shaking left and right when being lifted to move, so that the shaking is reduced, the lifting is more stable, theweight is prevented from sliding off and being damaged, the loading and unloading efficiency is improved, the labor intensity of operators is reduced, the safety production is guaranteed, and the problem that the weight is not stable after being lifted is solved.