The invention provides a processing method for a high-quality, low-sugar content plum slice. The flow of the method is as follows: semifinished fruit pickling, picking and washing, desalination, core removal, pulping, flavoring, shaping, drying, slicing and finished product packaging. Because the processing method adopts flowing hot water to carry out gradient desalination, the process of desalination is accelerated, and the loss of heat energy is reduced; since semifinished plums are pulped, the subsequent process of flavoring is facilitated, the pickling time spent in whole fruit processingis saved, the loss of nutrients is prevented in the process of pickling, overall drying is facilitated, and the uniformity of the color of the product is guaranteed; because xylitol is directly addedto replace the osmotic cane sugar adopted by the conventional process, the processing period is greatly shortened, and the sugar content in the product is decreased; after pulp is scraped into pieces, the pieces are dried under vacuum and constant temperature, and cut into the plum slices with uniform size and thickness, the plum slices are neat and attractive, the product keeps the original color and flavor, the original nutrient ingredients are prevented from being destroyed as well, and moreover, the plum slices are convenient to eat.