Sweet potato powder and preparation method thereof

The invention discloses a sweet potato powder which is prepared by the following raw materials in parts by weight: 70-80 parts of sweet potatoes, 16-20 parts of pumpkin juice, 10-15 parts of soybean milk, 1-2 parts of sweet potato vines, 2-3 parts of bran fried yam, 2-3 parts of prepared rehmannia root, 1-2 parts of schisandra chinensis, 1-2 parts of mioga ginger, 1-2 parts of endothelium corneum gigeriae galli, 2-3 parts of hawthorns, 3-4 parts of radix paeoniae alba, 1-2 parts of rhizoma alismatis, 2-3 parts of dandelion, 1-2 parts of baked licorice, 6-7 parts of strawberry wine, 4-5 parts of maltitol, 1-2 parts of pseudo-ginseng powder and 3-4 parts of whey powder. The sweet potatoes, the pumpkin juice and the soybean milk are taken as main materials and are processed into the nutrition and health care sweet potato powder which is fragrant, sweet and delicious together with multiple ingredients; the sweet potato powder is fine and smooth in texture, not only reserves the nutrition ingredients such as dieta