A novel stacker crane comprises a lifting traction device, a horizontal traction device and a clamping paw mechanism, wherein the lifting traction device drags a lifting frame to move vertically; the horizontal traction device is arranged on the lifting frame and horizontally moves along the lifting frame; the clamping paw mechanism is connected to a rotating device of the horizontal traction device; the lifting traction device comprises a speed reducing motor, a rack, a driving chain wheel shaft, a worm gear and worm speed-reducing device, a speed-reducing motor output connecting shaft, a motor output connecting shaft coupler, a lifting driving chain wheel, the lifting frame and a tensioning chain wheel; the horizontal traction device comprises a movable frame, a swinging oil cylinder, a horizontal traction speed-reducing motor, an output shaft, the rotating device and a sensor support; the clamping paw mechanism comprises a first clamping paw guiding rack, a second clamping paw guiding rack, a first pair of clamping mechanism paws, a second pair of clamping mechanism paws, a first driving hydraulic cylinder and a second driving hydraulic cylinder; and a guiding shaft is fixed by the first clamping paw guiding rack and the second clamping paw guiding rack. The novel stacker crane has the advantages that stable and synchronous clamping is realized, damage is avoided, the labor intensity is reduced, the manufacturing cost is low, and the production efficiency is improved.