The invention discloses a double-crank three-dimensional rotating garage structure, which belongs to the field of traffic facilities. A double-crank parallelogram mechanism is adopted: according to a principle that if a rack of the mechanism is horizontal, the lengths of the two cranks are equal, and the length of a connecting rod is equal to the length of the rack, no matter where the cranks rotate, the trajectory of the connecting rod is also horizontal, the parallelogram mechanism is formed through three-dimensional deformation. Because the mechanism rotates but a platform thereof is always horizontal, the problem of platform stability is solved, and the space can be reasonably arranged, therefore, as vehicles are increasing today, the rotating garage structure as another kind of three-dimensional rotating garage has reasons for being. The platform also can be applied to various fields such as various logistics delivery and factory flow lines and workbenches and the like.