The invention relates to a rail tracked vehicle carrier for an automatic three-dimensional garage. The rail tracked vehicle carrier comprises a travelling mechanism consisting of a tracked vehicle, and a tractor which is fixedly connected with the tracked vehicle, and a rail stocker chassis on which a friction wheel and positioning wheels are arranged. The rail tracked vehicle carrier has the characteristics that: the rail stocker chassis of the multi-layer three-dimensional garage is provided with the traveling mechanism which is matched with a stocker for use and can horizontally move back and forth when an automobile is carried into and out of the garage. The invention has the advantages that: the rail tracked vehicle carrier has an ingenious and reasonable structure, a special mechanism is not needed to be designed for a parking space of the three-dimensional garage, and the construction cost of the garage is reduced. When the automobile moves in and out of the garage, a track of the tracked vehicle at the fixed station and the travelling mechanism can synchronously run in an opposite direction, wheels of the automobile do not roll or rotate relative to the ground of the parking space, and adverse influence on a transmission shaft and a gear of the automobile, which is caused by long-term automobile parking and taking, can avoided. The rail tracked vehicle carrier is a novel efficient automobile carrier for the automatic three-dimensional garage.