The invention discloses a windmill type rotary material turnover method for uniformly turning over materials and a rotary material turnover system. The method is characterized in that materials are received by blades; the blades are connected by a cam and a rotating shaft; and meanwhile, a resistance is applied to the cam by a lever and a gravity hammer, so that the blades can be turned over only after receiving a certain amount of materials, further the effect of uniformly turning over the materials is realized, and the feeding amount of a vibration type feeding mechanism becomes uniform. The rotary material turnover system comprises a rotating shaft positioned between a vibrating disk and an elevator; a plurality of uniformly-distributed blades are connected onto the rotating shaft; one end of the rotating shaft is connected with the cam; the lever is in contacted connection with the upper part of the cam; the middle of the lever is connected with the gravity hammer; one end of the lever is connected with the rotating shaft. According to the windmill type rotary material turnover method and the rotary material turnover system disclosed by the invention, the feeding of the vibration type feeding mechanism becomes uniform, the consistency and the qualification rate of processed subsequent products can be improved, the service life is prolonged, and the occurrence rate of the phenomena such as material blockage and spill-over is reduced; and in addition, the windmill type rotary material turnover method and the rotary material turnover system have the advantages of high adjusting precision and high working efficiency.