This parking system is designed of two spaces of up and down as one unit. The bottom car can go in and out directly. When the upper space needs to park a car, the car in the bottom should be driven out; It can be widely used in hotels, enterprises and public institutions and residential area. Column can be N+1 form, saving land area, full use of space, property rights; Hydraulic drive, chain balancing device to ensure the balance both ends of rise and fall’; Low noise, smooth operation, save energy, low carbon and environmental protection; Vehicle loading pallet fully enclosed design, to avoid oil leakage, rain and snow Polluting the lower vehicles; Spraying plastics, high anti-corrosion ability, long life. Electrical and driving parts with waterproof characteristics; Simple structure, easy installation, minimal requirements for civil engineering;