The invention discloses a non-avoidance double-layer parking device. The device comprises a first-layer parking plate, a second-layer parking plate, front connecting rods, rear connecting rods, lineardrives, a movable plate, screw nuts, a fixed bottom plate, screw rods, a gear motor, sliding blocks and guide rails. The screw nuts, the gear motor and the sliding blocks are fixed on the movable plate; the sliding blocks fixed on the movable plate can freely slide on the guide rails fixed on the fixed bottom plate; the second-layer parking plate is hinged to upper hinge holes of the front connecting rods and the rear connecting rods; the upper ends of the front connecting rods and the rear connecting rods are hinged to the second-layer parking plate, and the lower ends of the front connecting rods and the rear connecting rods are hinged to the movable plate; the linear drives can be one of hydraulic cylinders, pneumatic cylinders and electric linear push rods, one end of each linear drive is hinged to the corresponding rear connecting rod, and the other end of each linear drive is hinged to the movable plate; the screw rods are driven by the gear motor to rotate, and then the movableplate moves front and back through screw rod and screw nut pairs. The non-avoidance double-layer parking device overcomes the defect that traditional double-layer parking devices need avoidance whena vehicle is parked or taken, and is simple in structure, convenient to operate, safe and reliable.