Vitamin C is a monoclinic crystal that is usually in the form of flakes or sometimes needles. It is odorless, sour, easily soluble in water, and has strong reducing properties. It participates in the complex metabolic process of the body, can promote growth and enhance resistance to diseases, and can be used as a nutritional supplement, antioxidant, and wheat flour improver. However, excessive supplementation of vitamin C is not beneficial to health, but harmful, so it needs to be used rationally.