With the improvement of people’s living standard, the incidence of fatty liver disease is gradually increasing. At present, the incidence of fatty liver in urban adults in China has reached 10%-20%, and the prevention and treatment of fatty liver has received more and more attention. Simple fatty liver can be improved or even completely restored to normal after basic lifestyle adjustment, weight loss, removal of etiology and control of primary disease. Weight loss is particularly important in the treatment of fatty liver disease, and dietary therapy and exercise are the basis for weight loss and are currently the basic measures in the treatment of simple fatty liver and steatohepatitis. The benefits of weight loss are not limited to the restoration of liver function, but importantly, the reduction of visceral fat content can improve insulin resistance, increase insulin sensitivity, improve metabolic levels to varying degrees, and reduce the risk of cirrhosis and extrahepatic systemic complications. (i) Dietary control: Calculation of energy intake in patients with fatty liver, it is generally believed that 1 kg of body fat contains about 7000 kcal of caloric energy, therefore, to reduce body weight (fat) by 1 kg, the caloric energy intake must be reduced by about 7000 kcal. If you reduce your caloric energy intake by 500-700 kcal per day, it will take about 14-10 days to achieve the goal of losing 1 kg of fat. In general, the standard weight is used to determine the appropriate amount of caloric intake, i.e. daily caloric intake (kcal) = standard weight (kg) x 20-25. However, for people with short stature, it is possible that the daily caloric intake is less than 1200 kcal. When the caloric intake is lower than 1200 kcal, it is difficult to ensure the intake of nutrients needed by the body to supply, and it is also difficult to persevere. Therefore, in practice, it is generally stipulated that the low limit of daily caloric intake is 1600 kcal for young men and 1400 kcal for young women, which is important for maintaining the physical and mental health of dieters. Therefore, weight loss should never be overdone. Limit the intake of caloric energy, it is necessary to ensure the supply of nutrients in order to maintain the normal physiological functions of the body. In the process of dietary weight loss, the ratio of the three major thermogenic nutrients is very important. Obesity dietary treatment of the three major nutrients distribution principles are: protein accounted for 25% of the total caloric energy, fat accounted for 15%, carbohydrates accounted for 60%. In the choice of protein, animal protein can account for about 50% of the total protein. In the limited fat intake, it is best to ensure the intake of essential fatty acids. Care should be taken to distribute the day’s intake as evenly as possible, not to miss meals, and to avoid additional meals in the evening. Along with the reduction of total intake, there is often a problem of insufficient intake of vitamins and inorganic salts. The main vitamins that are easily deficient are vitamin B1, B2, nikonic acid, etc. Inorganic salts that are easily deficient are calcium, iron, etc. In order to prevent vitamin and inorganic salt deficiency diseases, it is necessary to pay attention to reasonable food selection and combination. Fresh vegetables, fruits, legumes, animal offal such as liver and milk are the main sources of vitamins and inorganic salts. In addition, multivitamin and inorganic salt preparations can be taken appropriately under the guidance of a doctor. Diet should not be overly fine, staple food should be coarse and fine grains with, obese patients often have the problem of constipation, appropriate increase in dietary fiber intake can help relieve constipation, it is best to ensure that the daily intake of dietary fiber is about 30 grams. (B) exercise therapy: avoid strenuous exercise, to swim, jogging, brisk walking and other aerobic exercise, 3 to 5 times a week moderate intensity aerobic exercise, exercise for 70% to 80% of the maximum heart rate, each exercise lasts 30 to 45min or more. For young and middle-aged people can increase the number of exercises, exercise therapy should pay attention to the gradual, persistent. Long-term exercise therapy can reduce triglyceride levels and increase HDL levels, but has little effect on LDL. The basic treatment of fatty liver can be summarized by “eating less and moving more”. By actively adjusting the diet structure, improving bad habits and exercising reasonably, simple fatty liver can be completely recovered and steatohepatitis can be significantly improved.