The invention discloses a comb-tooth type single-side roadway stacking stereo garage and a using method thereof. The comb-tooth type single-side roadway stacking stereo garage comprises a stereo garage body, wherein a plurality of parking spaces are arranged on the stereo garage body, and four fixed comb teeth are installed and arranged at the positions where the parking spaces lift car tires; a stacker which slides horizontally in the stereo garage body is arranged on one side of the stereo garage body; and the stacker comprises a main frame and a lifting platform vertically and slidably arranged on the main frame; a comb-tooth carrier which horizontally enters and exits the stereo garage body is slidably arranged on the lifting platform, and the comb-tooth carrier is provided with a lifting comb-tooth frame. Compared with a roller type forward single-side roadway stacking stereo garage, the number of power and sensors is greatly reduced, the cost is reduced, and the reliability of equipment is improved. Compared with a car-carrying plate type forward single-side roadway stacking stereo garage, a car-carrying plate is cancelled under the condition of little increase in structuralcomplexity, the reliability of the equipment is thus ensured, and the car parking and taking efficiency is greatly improved.