The invention relates to the technical field of part cleaning, and particularly discloses a combined part cleaning method and cleaning device. The cleaning method comprises the following steps that scrap iron is cleared by using a compressed air gun; the part is cleaned in a vibration manner; high-pressure flushing is carried out on the part, and then oscillation cleaning is carried out; the partis rinsed, and then the part is cleared by using the compressed air gun; and the cleanliness of the part is checked. The cleaning device comprises an ultrasonic vibration cleaning machine, a vibrationhigh-pressure washing machine and an oscillation rinsing machine which are connected in sequence. According to the part cleaning method and device, the steps are simple, the operation is convenient,the cleaning effect is good, and the cleaning method and device are suitable for cleaning different parts, multiple procedures are adopted and combined for cleaning, so that impurities on the surfaceof the part can be cleaned, moreover, the fine scrap iron inside the part can be cleared thoroughly, meanwhile, burrs which are easy to fall off are washed and cleaned, and therefore the optimal cleaning effect is achieved, the cleanliness of the parts is guaranteed, and a guarantee is provided and a foundation is laid for the follow-up manufacturing of precise mechanical equipment at the same time.