A driving device comprising: a moving unit for being mounted on a pinion interacting with a rack and moving with the pinion along a trajectory of the rack; and a guide module for being arranged at at least any one side of the rack, connected to the moving unit, and for guiding a movement of the moving unit that moves with the pinion along the trajectory of the rack, wherein the guide module comprises a module rail for forming the same trajectory as the rack at one side of the rack; and a running portion comprising a plurality of running wheels guided to run on a side wall of the module rail, and a running wheel connection block arranged across the module rail and connected to the plurality of running wheels, characterised in that the guide module further comprises a front steering portion connected to the running portion in front of the running portion, the front steering portion comprising a plurality of front steering wheels steered and guided to run on the side wall of the module rail when passing a curved section of the module rail; and a front steering wheel connection block arranged across the module rail and connected to the plurality of front steering wheels, wherein the guide module further comprises a rear steering portion symmetrically arranged to the front steering portion and connected to the running portion at the back of the running portion, the rear steering portion comprising a plurality of rear steering wheels steered and guided to run on the side wall of the module rail when passing the curved section of the module rail; and a rear steering wheel connection block arranged across the module rail and connected to the plurality of rear steering wheels, wherein the guide module further comprises: a front relative rotation connection portion connecting the running portion with the front steering portion to rotate relative to each other; and a rear relative rotation connection portion connecting the running portion with the rear steering portion to rotate relative to each other. a moving unit for being mounted on a pinion interacting with a rack and moving with the pinion along a trajectory of the rack; and a guide module for being arranged at at least any one side of the rack, connected to the moving unit, and for guiding a movement of the moving unit that moves with the pinion along the trajectory of the rack, wherein the guide module comprises a module rail for forming the same trajectory as the rack at one side of the rack; and a running portion comprising a plurality of running wheels guided to run on a side wall of the module rail, and a running wheel connection block arranged across the module rail and connected to the plurality of running wheels, a module rail for forming the same trajectory as the rack at one side of the rack; and a running portion comprising a plurality of running wheels guided to run on a side wall of the module rail, and a running wheel connection block arranged across the module rail and connected to the plurality of running wheels, characterised in that the guide module further comprises a front steering portion connected to the running portion in front of the running portion, the front steering portion comprising a plurality of front steering wheels steered and guided to run on the side wall of the module rail when passing a curved section of the module rail; and a front steering wheel connection block arranged across the module rail and connected to the plurality of front steering wheels, a plurality of front steering wheels steered and guided to run on the side wall of the module rail when passing a curved section of the module rail; and a front steering wheel connection block arranged across the module rail and connected to the plurality of front steering wheels, wherein the guide module further comprises a rear steering portion symmetrically arranged to the front steering portion and connected to the running portion at the back of the running portion, the rear steering portion comprising a plurality of rear steering wheels steered and guided to run on the side wall of the module rail when passing the curved section of the module rail; and a rear steering wheel connection block arranged across the module rail and connected to the plurality of rear steering wheels, a plurality of rear steering wheels steered and guided to run on the side wall of the module rail when passing the curved section of the module rail; and a rear steering wheel connection block arranged across the module rail and connected to the plurality of rear steering wheels, wherein the guide module further comprises: a front relative rotation connection portion connecting the running portion with the front steering portion to rotate relative to each other; and a rear relative rotation connection portion connecting the running portion with the rear steering portion to rotate relative to each other. a front relative rotation connection portion connecting the running portion with the front steering portion to rotate relative to each other; and a rear relative rotation connection portion connecting the running portion with the rear steering portion to rotate relative to each other.