Vitamin is one of the most important nutritional elements to maintain the normal metabolism of the human body, it is generally not synthesized in the body and needs to be taken from the diet. With a well-balanced diet and normal digestive function, the body can consume sufficient amounts of the required vitamins without additional supplementation. Vitamins can be divided into two categories: fat-soluble vitamins such as vitamins A, D and E and water-soluble vitamins such as B and C. These include dozens of vitamins and each vitamin has a different function. Currently, many people regard vitamin drugs as “nutritional drugs” or even “supplements” and take them for a long time, and the phenomenon of vitamin abuse is common. This is not only a waste of money, but also disrupts the balance of vitamins in the body, which affects the normal function of the body, and even poisoning. In the human body, there is a strict balance between various vitamins. When one vitamin is deficient, it is often accompanied by other vitamin deficiencies; if a large number of single application of a certain vitamin, it can also cause multivitamin deficiency. Generally speaking, the vitamins that the human body needs on a daily basis are the safest and most effective to take in from the diet. 1, rich in vitamin A food Milk, dairy products, meat, chicken, fish, animal liver, carrots, leeks, celery, spinach, pumpkin, tomatoes, etc.; bananas, oranges, hawthorn and other fruits are also rich in vitamin A content. 2, rich in B vitamins food animal liver, lean meat, yeast, soybeans, rice bran, green leafy vegetables, brown rice, fish, milk, etc. 3, rich in vitamin C food green leafy vegetables such as persimmon peppers, bok choy, spinach and other dark vegetables and cauliflower, peppers, potatoes; citrus, orange, tomatoes, kiwi, red fruit, grapefruit and other fruits are also high in vitamin C. Wild amaranth, alfalfa, prickly pear, sand dates, kiwi, sour dates, red dates and other vitamin C content is particularly rich. 4, rich in vitamin E food vegetable oils, green vegetables, animal organs, beans, egg yolks, melons, nuts, wheat germ, etc.