Purple sweet potato is rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals, as well as selenium and anthocyanins. Purple sweet potato is rich in nutrition and has special health care function, in which protein amino acids are easily digested and absorbed by human body. It is rich in vitamin A, which can improve vision and mucosal epithelial cells of the skin. Vitamin C can make collagen synthesize normally and prevent scurvy. Anthocyanin is a natural powerful free radical scavenger.

Purple sweet potato is rich in selenium, iron and anthocyanin besides the nutrients of ordinary sweet potato. Ranked first in the anti-cancer vegetables published by the National Vegetable Cancer Research Center of Japan. In addition, purple sweet potato can be peeled, dried and crushed into powder, with beautiful color and rich nutrition. It is an excellent raw material for food processing and can be used as the main ingredient or ingredient of various cakes.