The utility model discloses a transmission belt sorting device which comprises a machine frame, a rotating platform arranged on the machine frame and a driving device arranged below the machine frame,and the rotating platform is driven by the driving device. The rotating platform comprises a rotating disc, the rotating disc comprises a conveying belt area and a transition area, the transition area is composed of a plurality of horizontally-arranged guide wheels, and the conveying belt area is provided with a first belt conveying device; and the upper surface of the turntable is flush with theupper surface of the rack. The conveying belt sorting device is simple in structure, low in cost and low in tallying requirement.