The invention discloses a stereoscopic parking garage. The stereoscopic parking garage comprises a steel structure framework, a mechanical transmission system, a control system, a safety protection system and a vehicle carrying device, wherein the steel structure framework comprises oppositely arranged vertical rectangular steel plates, a base steel plate, four chain wheel bearing guide rails and a connecting piece, and each vertical rectangular steel plate is provided with two chain wheel bearing guide rails; the mechanical transmission system comprises a motor, a brake, chain wheels driven by the motor, four sets of guide rail chains, one gear chain and multiple exposed gears, the chain wheels are distributed on the chain wheel bearing guide rails at intervals, and the chain wheels mesh with the guide rail chains and the chain wheel bearing guide rails simultaneously; the control system comprises an upper computer monitoring module, a lower computer PLC control module, a touch screen human-computer interaction module and a detection module; the safety protection system comprises a vehicle stopper and an intelligent fireproofing facility; the vehicle carrying device comprises several vehicle carrying plates and beams which are arranged at the two sides of the lower surfaces of two of the vehicle carrying plates.