As an important part of modern ship transportation, the design, installation and commissioning of its core functional module, the top-lifting mobile deck, are directly related to the operational efficiency and safety of the ship. Compared with the traditional lifting deck, the top-lifting system realizes the vertical displacement of the deck through hydraulic or mechanical top-lifting device, which can flexibly adjust the deck spacing of each layer according to the height difference of the reprinted vehicle, thus significantly improving the loading capacity and operation economy of the ship.