The invention relates to a making method of dried pitaya peel fruit. The method comprises the following steps of (1), pretreatment of a 
raw material: removing the peel of the pitaya, washing the peel by using 
distilled water, trimming, and slitting for later use; (2), 
sugar soaking: soaking the peel of the pitaya, which is subjected to the pretreatment, into a 
sugar alcohol solution, and treating by using an ultrasonic wave; (3), congealing: putting the peel of the pitaya, which is subjected to 
sugar soaking treatment, into a refrigerator for freezing until 
free water and 
bound water in the peel of the pitaya are both congealed; (4), sublimation 
drying: putting the peel of the pitaya, which is subjected to congealing treatment, into a vacuum freeze drier, and meanwhile, turning on a 
vacuum pump to extract air in the dryer; (5), 
desorption drying: putting the peel of the pitaya, which is subjected to the sublimation 
drying, into a freeze dryer, and meanwhile, turning on the 
vacuum pump, wherein the 
moisture of the freeze-dried peel is always maintained to be between 2 percent and 4 percent; further, the peel is subjected to collapse, coking and oxidation; (6), packaging: charging 
nitrogen for packaging the freeze-dried peel of the pitaya by using an 
aluminum foil-
polyethylene material.