The invention discloses a grading production system for open coal breaking and sieving. The grading production system comprises a mine car, a receiver bin, a heavy plate feeder, a feeder material returning hopper, a feeder head hopper, a tooth roller cracker, a main belt conveying machine, a three-way chute, a transshipment belt machine, a first-time vibrating screen, a hopper under a screen, a turning plate chute, a chute in front of the screen, a belt machine under the screen, a material returning belt machine, a finished product belt machine, a second-time vibrating screen, a winnowing buffer cabin, a winnowing gate, a winnowing feeder, a winnowing belt machine, a winnowing three-way chute, a winnowing coal washer, a clean coal belt machine, a loaded material breaking dust remover, a vibrating screen dust remover, a dust remover scraper, a middling coal belt machine, a gangue belt machine, a coal dust belt machine, a three-time vibrating screen, a middling coal stock bin, a gangue stock bin and a coal dust stock bin, wherein two adjacent devices are communicated through a material conveying pipeline. According to the grading production system disclosed by the invention, the first-time vibrating screen, the second-time vibrating screen, the winnowing coal washer, the three-time vibrating screen and the tooth roller cracker are arranged singly or arranged in parallel accordingto practical requirements.