Vitamin B refers to the vitamin B family, usually B1, B2, B6, B12, folic acid and other commonly used vitamins, of which the role of the respiratory tract, the role of the digestive system, the role of the circulatory system, endocrine effects and neurological effects. First, the role of the respiratory tract has increased the barrier and protective capacity of the respiratory mucosa, reducing airway hyperreactivity, reducing the incidence of diseases such as respiratory infections. Second, digestive system effects include increasing digestive and absorption functions, improving abdominal pain, bloating, constipation, and malnutrition. Third, the role of the endocrine system is to regulate endocrine, increase immunity and maintain endocrine status. Fourth, the role of the cardiovascular system can have a repair such as coronary atherosclerotic heart disease and other causes of cardiovascular endothelial damage. Fifth, the role of the nervous system can be to improve nerve blood supply, improve sleep quality.