The invention relates to a lifting device, in particular to a lifting device for building low floors. According to the technical aim to be achieved, the lifting device for building the low floors is provided, wherein the lifting device is suitable for the low floors and capable of saving time and labor. In order to achieve the above aim to be achieved, the lifting device for building the low floors is provided and comprises a base, wheels, first guide sleeves, insertion rods, pressing plates, a support, magnets, a top plate, first fixed pulleys, a large belt wheel, an installation plate, a bearing block, a rotating shaft and the like. The wheels are installed at the bottom of the base. The first guide sleeves are arranged at the left portion and the right portion of the base. The insertionrods are sleeved with the first guide sleeves. The top ends of the insertion rods are connected with the pressing plate. The support is arranged at the center of the top of the base. The magnets arearranged at the lower portions of the left side and the right side of the support. The lifting device has the beneficial effects of being suitable for the low floors and capable of saving time and labor. Building materials can be transported to the floors by rotating a rocking handle, and the effect of saving time and labor is achieved.