Vitamins are essential nutrients for the body to maintain normal metabolism and function, and have no role in enhancing sexual function, and are not recommended to be supplemented blindly. Vitamins and water, sugar, protein, fat, inorganic salts, etc. are essential nutrients for the human body. Only when these components are balanced intake, can make the body’s metabolism normal, and then make the body’s sexual function and other functions in a normal state. There are more reasons for the lowering of sexual function, and if abnormalities should be clarified in time, maintain a good state of mind, and be treated for the cause of the disease. Vitamin deficiency can lead to malnutrition, affecting the body’s functions and symptoms related to vitamin deficiency. However, excessive intake of vitamins may increase the metabolic burden, and may even induce disease. Generally a sensible diet ensures the intake of vitamins. It is not recommended to supplement blindly when the organism does not have a vitamin deficiency.