The invention discloses a driving force differential two-wheeled turning device which comprises outer hubs, wheels, one-way bearings, inner hubs, an axle and a chain wheel. The chain wheel is mounted in the center of the axle. The inner side and the outer side of each wheel are provided with the corresponding inner hub and the corresponding outer hub. The outer hubs are fixedly arranged on the axle through fixing nuts and first bearings. The one-way bearings are arranged on the sides, facing the wheels, of the inner hubs. The axle penetrates through the one-way bearings, the outer rings of the one-way bearings are mounted on the inner hubs, and the inner rings are matched with the axle. Second bearings are arranged on the sides, back to the wheels, of the inner hubs, the outer rings of the second bearings are mounted on the inner hubs, and the inner rings are matched with the axle. Brake plates are arranged on the sides, back to the wheels, of the inner hubs. The chain wheel provides power for the axle to drive the wheels to rotate, in the turning process, the wheel on the side with the small turning radius is automatically locked under the action of the corresponding one-way bearing, the wheel on the other side can freely rotate, differential motion is achieved, and car turning is achieved.