The role of vitamin B2 is mainly involved in catalyzing redox reactions, drug and fat metabolism and other roles. 1. Catalyzing redox reactions: as a precursor substance of coenzyme FMN, FAD and covalently bound flavin, it is widely involved in metabolic processes, and vitamin B2 is the central link of energy production. Vitamin B2 as a precursor substance has strong antioxidant activity, reducing cardiac damage due to ischemia and reperfusion. 2. Involved in drug and fat metabolism: vitamin B2 can be combined with cytochrome P450 to participate in drug metabolism. The human body lacks vitamin B2 will appear weakness, fatigue, brain dysfunction. Vitamin B2 is involved in a variety of biochemical reactions in the body, and a deficiency may lead to discomfort, so daily supplementation of essential vitamin B2 should be taken.