Adequate and reasonable nutrition and good eating habits are of great significance to enhance college students' physique, prevent diseases and improve their health. College students are in the vigorous period of growth and development, with vigorous metabolism and heavy mental work, so they have a deeper understanding and higher requirements for reasonable nutrition. People need more than a dozen nutrients every day, but no food in nature can fully meet all their needs. Eating must rely on the scientific collocation of food, so that the quality and quantity of nutrients intake can be balanced with the needs of the human body. Nutrients in various foods can be divided into six categories: protein, fat, sugar, minerals, vitamins and water. These six nutrients are also the material basis of life activities, and the content of these six substances in each food is different. For example: 1, cereals: heat energy, the main source of B vitamins, in which protein content is only 10%. 2, beans: soybeans are rich in protein and fat; Mung beans and red beans are rich in starch and protein. 3. Animals: including meat, viscera, eggs, milk, fish, etc. This kind of food is the main source of quality protein. 4. Vegetables and fruits are the main sources of vitamins, inorganic salts and dietary fiber. Fruit is a good source of vitamin C, and it can also provide pectin and organic acids, which plays an important role in helping food digestion. In addition, vegetables and fruits are important foods to maintain body balance, increase resistance and prevent diseases. Recommended daily amount of nutrients for college students: 1. Protein mainly needs to maintain normal physiological activities and neurothinking activities, among which high-quality protein should account for 30-40% of protein's intake. 2, calories In order to ensure that college students have strong energy to participate in various activities, they should ensure that they consume enough calories every day. Eat 55-70g of fat and 250-300g of carbohydrates. Vitamins and vitamins are essential components to maintain normal physiology, function and metabolism. The recommended daily amount of vitamins: vitamin A is 1040mg, vitamin B 1, B2 and 6 are 1.2- 1.5mg, vitamin D is 5- 10mg and vitamin E is10-. 4. The recommended daily intakes of inorganic salts and trace elements are zinc15mg, calcium 800mg, potassium 2-3g, sodium 900-3000mg, iodine150mg, iron12mg and selenium 20mg. Establish good eating habits. Students should allocate 30%, 35% and 35% calories in breakfast, lunch and dinner respectively, and form the habit of eating and breakfast, otherwise it will easily lead to premature aging of brain cells, digestive system diseases, diabetes, heart disease and hypertension. 2, can not be partial eclipse and picky eaters, otherwise it is easy to cause nutritional deficiency. 3, the diet should be reasonably matched, requiring coarse grain flour and rice to be matched with vegetarian dishes, and giving a certain amount of fruits and vegetables. 4, diet should be moderate, three meals should be reasonable, eating and drinking on holidays and festive days is a bad eating habit, which is easy to cause pancreatitis and acute gastroenteritis. 5. Salt should be restricted. The daily physiological requirement of salt should not exceed 5g. Excessive salt can easily cause hypertension, gastritis and peptic ulcer. 6, blind and unscientific weight loss is harmful to health, blindly limiting diet to lose weight, easy to cause nutritional deficiency. Symptoms such as dizziness, limb weakness, sallow complexion, anorexia nervosa, irregular menstruation and amenorrhea appear. A person's normal diet should contain more than 40 kinds of nutrients. The key is to achieve the appropriate quantity and reasonable collocation, among which fruits, vegetables and coarse grains are most recommended.