The invention discloses a transverse-moving-type stereo parking garage structure which comprises a garage. The garage is provided with a plurality of supporting seats, and an opening is formed in theupper end of the garage. A garaging device is mounted at the opening and provided with a lifting motor which is wound with a lifting rope, and a support is fixedly connected to the end, away from thelifting motor, of the lifting rope. A bottom plate is mounted at the bottom end of the support, and a hydraulic oil station is mounted in the middle of the bottom end of the bottom plate. Hydraulic oil cylinders are mounted on the two sides of the bottom end of the bottom plate correspondingly, and the hydraulic oil station communicates with the hydraulic oil cylinders through oil pipes. Two supporting plates are symmetrically arranged at the upper end of the bottom plate, and the ends, close to each other, of the two supporting plates are rotatably connected to the bottom plate jointly. According to the transverse-moving-type stereo parking garage structure, the structure is stable, operation is easy, design is scientific and reasonable, vehicle storage can be convenient, vehicles can belimited and automatically garaged, the buffer anti-seismic property is good, a large amount of time and energy of workers can be saved, and the transverse-moving-type stereo parking garage structure is worthy of being popularized accordingly.