Abstract Parking is designed to achieve a variety of automatic vehicle park and storage facilities for scientific storage. With the continuous increase ofcity cars, the parking problem has become a common phenomenon oflarge and medium-sized city. Mechanical stereo garage can make full use of Shangdi resources, play space advantage, maximize the parkthe vehicle, has become an important way to solve city static trafficproblem. The up-down and translation stereo garage is typical as the research object, considering the two factors of cost of manufacture and operational efficiency of the stereo garage. In this paper, the present situation and trend of the garage at home and abroad on the basis of full investigation, the choice of the doublethree formulistic garage structure as the research model. Up-down and translation stereo garage in terms of its components, can be divided into three parts: the garage structure, transmission parts and control parts of the system. The paper simply introduces main structure andcharacteristics of the garage, the garage control system are brieflydescribed, according to the operation principle of up-down and translation stereo garage, the mechanics theory of the up-down and translation stereo garage for a comprehensive analysis of themechanics, including axial strength, transverse transmission system frame lifting cross sl