The liver is an important organ in the human digestive system, with various metabolic functions, and has an important role in the metabolism of carbohydrates, lipids, proteins, vitamins, hormones and other substances; the liver also has the functions of secretion, detoxification, biotransformation and so on. When suffering from liver disease, its main pathological changes are hepatocyte degeneration, inflammation and hepatocyte necrosis, clinical symptoms are mainly weakness, poor nausea, vomiting, aversion to oil, bloating, pain in the liver area and abnormal liver function, which directly affects the secretion of bile, causing impaired fat digestion and absorption, increased protein, calorie consumption and low immune function, the diet of patients with liver disease is very important, that is, a balanced diet. In general, liver disease patients are absolutely prohibited from drinking alcohol and alcoholic beverages, eat less spicy, spicy, seafood and other stimulating food, less smoked and fried food, indigestible food and pickled products, do not hunger and satiety unevenly. When jaundice, eat less mutton, dog meat, chicken and other dry products. In case of fatty liver or fatty infiltration of the liver, eat less sweets, limit high-fat foods such as animal offal and butter, and control the diet appropriately. When there is ascites, the diet should be less salt, and cirrhosis of the liver should avoid eating rough and hard food. A proper calorie diet, should not be too high or too low, generally adults should be given 2000-2500 kcal per day, the daily intake of about 400 grams of carbohydrates (sugars) to ensure the supply of heat, otherwise it is a pity that the protein that is easily produced are moved as calories to be consumed. Second, acute and chronic hepatitis diet, patients should eat high protein, low fat, high vitamin food, carbohydrate intake should be moderate, not too much, to avoid fatty liver. Recovery period to avoid over-eating. Absolutely no alcohol, no alcoholic beverages, nutrients and drugs. Patients with chronic liver disease should eat less high-fat food. When bloating, eat less milk, soy milk and soy products, high protein and sweet food. Protein supplementation, regular people need about 70 grams of protein per day to maintain light labor, liver disease patients need 90-100 grams of protein per day to promote liver cell regeneration and repair, but to liver disease patients should pay attention to the following points when supplementing protein, 1, liver disease when the digestive function is weakened, too much food often leads to indigestion, but also increase the burden on the liver. Therefore, it is proposed that it is best to eat 80% full. Overeating is not good for the liver and gastrointestinal function. Patients with liver disease should use a small number of meals. 2.The folk so-called liver disease patients can not eat chicken, fish, etc. is not in line with the nutritional standards, but also no medical basis. 3, animal and plant proteins should be half and half with each other. The protein consumed by the human body is broken down into amino acids after digestion in order to be absorbed, and then manufactured in the liver into the most important human muscle and blood components required for protein, the human body has eight essential amino acids can not be manufactured by itself, must be supplied by food, and the amino acids broken down by animal and plant proteins are different. When animal and plant proteins are provided in a balanced way every day, they can make up for each other’s deficiencies, ensure the intake of essential amino acids and significantly increase the utilization of protein. 4, protein supplementation should not be excessive, should be based on daily needs, too much daily supplementation increases the burden on the liver, and can lead to obesity and even fatty liver. Dividing the total weekly protein requirement into seven equal portions and eating equal portions daily will be a kind of both economical and reasonable nutritional allocation. 5, severe hepatitis or cirrhosis, especially the trend of hepatic encephalopathy patients should eat less or even forbidden to eat protein, liver function is significantly impaired or hepatic encephalopathy aura, to eat protein under the guidance of a physician is the safest. Fourth, meat and vegetarian food should be eaten together, the clinical common patient to come to the clinic, yellow muscle thin, breathless, a few months ago to know that listening to the lobby of the doctor, with liver disease can not eat non-vegetarian food, lard, vegetable oil, chicken, fish, pork and even eggs can not eat, salt can not eat, only eat a little light boiled vegetables every day, this is nonsense, even normal people have to eat nutrition and liver disease, not to mention. The most important feature of non-vegetarian food is that it contains essential amino acids and high quality protein, while vegetarian fruits and vegetables contain incomplete essential amino acids except soybeans and soy products, and the quality of protein should be poor. In addition, animal food is richer in calcium and phosphorus than plant food, which are easily absorbed by the body. Fish, liver and eggs contain vitamin A and D which are missing in vegetarian food; and vitamin C and carotene in vegetarian food are often missing in non-vegetarian food. Vegetables are rich in crude cellulose, which can promote intestinal peristalsis, facilitate laxation and even have the effect of preventing digestive tract tumors. Therefore, it can be seen that meat and vegetarian food can be eaten in combination to complement each other’s strengths and weaknesses, which is beneficial to recovery. Five, liver disease to take a low-fat diet, when the fat intake, is bound to increase the burden of bile secretion of the liver, to the detriment of patients. Therefore, when suffering from hepatitis, especially in the acute stage, should pay attention to eat fatty foods, more easily digested and absorbed fatty foods, such as whole milk, cream and vegetable oils, as far as possible, do not eat or eat less animal fats, but the exception is cod liver oil. In the acute stage, a light diet is generally used, and a daily supply of 50-60 grams of fat is appropriate. Sixth, liver disease patients should prohibit the consumption of alcohol, alcohol is a drug for the liver. After drinking alcohol is quickly absorbed in the gastrointestinal tract, and about 90% of the alcohol component (ethanol) is metabolized in the liver to produce acetaldehyde. Ethanol and acetaldehyde both have toxic effects that directly stimulate damage to liver cells and can cause degeneration and necrosis of liver cells. Heavy drinkers often have symptoms of acute alcohol poisoning such as inadequate diet and vomiting; in more long-term alcoholics, the toxicity of ethanol and acetaldehyde often affects the normal metabolism of proteins, carbohydrates and fats by the liver and its detoxification function, leading to serious liver damage and alcoholic liver sclerosis.