Abstract: Experimental study on the drying quality of potato granules was performed by using the different drying ways. On the basis of the quality of sense organs of potato granules and the changes in the shape of particles, the influence of air temperature and drying ways was analyzed. The test results show that when the air temperature is at 95 ℃, the quality of potato granules is at its best. There is another result that the impinging stream drying is more effective than the pneumatic drying, the drum drying and the oven one.