Vitamin B2, also known as riboflavin, is a water-soluble vitamin that cannot be synthesized by the body itself and must be supplied by food. It is essential to maintain normal physiological functions and metabolism of the human body. Vitamin B2 is involved in the normal growth of cells, promotes wound healing, strengthens nails and hair, and is an important component of coenzyme. It is involved in the synthesis and metabolism of the three major nutrients of carbohydrates, protein and fat, as well as the composition of red blood cells and the transport of iron, which helps to prevent iron deficiency anemia, and also has a certain antihypertension effect