1, diet and nutrition is the material basis for maintaining life and health. To a large extent, diet has an important influence on the function and state of the organism. The corresponding nutritional support for patients with various diseases, through the reasonable deployment of diet, can improve the patient’s overall nutritional status, to improve physical condition, improve the quality of life and promote early recovery. 2, the key to high blood lipids and fatty liver is to control fats plus exercise and exercise. If the examination reveals that the blood lipid is too high, you should immediately control the amount of food and eat less various fatty meat, animal offal, fish roe, cream, sweet food, fried and deep-fried food and various sugary drinks; as long as you pay attention to adjust the above food and persist, you will make the blood lipid lower. Fatty liver is to limit the intake of fat and sugar foods, especially animal fat and pure sugar foods, and to enhance activities; the dietary principle is to reduce obese weight as the goal, to promote the consumption of excess fat in the body, in order to reduce the accumulation in the liver, for protein and vitamins are normally supplied. Early detection of fatty liver, timely treatment, and attention to adjust the diet can restore the liver cells to normal. If further development, hepatocyte degeneration, it can lead to liver cirrhosis. 3, the diet control of hypertension. The principles of control of fats and oils mentioned earlier are also applicable to patients with hypertension. Most medical experts believe that a reasonable diet is the basis for the prevention and treatment of hypertension. A considerable number of patients with hypertension, is caused by improper diet. A reasonable diet not only regulates the body’s lipid metabolism, but also helps to improve the concentration of blood so that the condition does not continue to progress. The principle of a reasonable diet is to limit salt and fat in the diet and increase foods rich in vitamin C and E. Those who are fat, should control the amount of diet. 4. Diet therapy is the key measure to control diabetes and should be adhered to for a long time and throughout life. In mild cases, no treatment is needed, only diet therapy can be effective. In severe cases, both medicine and food are used. As long as the diet is well controlled, patients can engage in normal work, prevent and control the occurrence of complications, improve the quality of life and extend life. 5, gout patients should pay attention to weight control, control oil and salt, pay special attention to control the intake of high purine food. For gout patients or patients with hyperuricemia, very high purine foods including seafood, animal offal, fatty meat and thick broth are prohibited; low purine foods include various green leafy vegetables, fine rice and noodles, milk and eggs that can be consumed. Milk and eggs are important sources of high quality protein for gout patients. 6. Dietary control of overweight and obesity. To reduce weight, we must achieve a negative energy balance, that is, we must eat less than we consume, so that the energy in does not cover the weight loss. Obesity patients have two aspects of prevention and control measures: on the one hand, diet control, in order to ensure that the body’s basic needs for a variety of nutrients, reduce the amount of food and caloric energy, and promote a gradual decline in weight; on the other hand, to adhere to the exercise, which can consume excess fat. Generally, these two measures should be taken at the same time, but we should not be in a hurry and drop too much at once, which will cause physiological function disorder instead. It is better to carry out under the guidance of nutrition physician and be persistent to achieve weight loss effect. 7, tumor patients have a higher incidence of malnutrition. Patients with major surgery, radiotherapy and chemotherapy are often combined with malnutrition, which leads to higher incidence of complications such as lowered immunity, digestive function disorder, liver function damage and infection, which directly affects patients’ ability to tolerate anti-cancer treatment and affects treatment effect and recovery. Therefore, nutritional support for tumor patients to ensure adequate nutritional intake while anti-cancer treatment can help patients maintain physical fitness and nutritional reserves, reduce or tolerate treatment-related side effects, and play a role in assisting treatment, while reducing the risk of infection, shortening hospitalization time, reducing hospitalization costs, and promoting early recovery.