Instant purple-sweet-potato powder and preparation method thereof

A disclosed instant purple-sweet-potato powder is prepared from the following raw materials in parts by weight: 80-100 parts of purple sweet potato, 10-15 parts of pawpaw, 2-3 parts of rose, 3-4 parts of coked eucommia, 1-2 parts of cacumen platycladi, 2-3 parts of flos eriocauli, 1-2 parts of laurel leaves, 2-3 parts of dried orange peel, 1-2 parts of rhizoma atractylodis, 3-4 parts of longan pulp, 2-3 parts of cistanche, 1-2 parts of bitter orange, 3-4 parts of coked malt, 35-40 parts of grape wine, 6-7 parts of skimmed milk powder, 3-4 parts of radix puerariae powder, 1-2 parts of soybean protein powder and 1-2 parts of beta-cyclodextrin. The instant purple-sweet-potato powder is prepared by employing purple sweet potato and pawpaw enzymatic hydrolysate as the main materials and processing with multiple auxiliary materials, is nutritive, health-care, fragrant, sweet and tasty; the instant purple-sweet-potato powder is good in dissolvability, fine in texture, unique in mouthfeel and uniform in color; the in