Cholecystitis and cholelithiasis are two of the most common biliary tract diseases, often causal and co-existing. more than 2/3 of patients present with persistent pain in the mid-upper or right upper abdomen, often in the evening and after a full meal. Chronic cholecystitis may have right upper abdominal discomfort or gastrointestinal symptoms such as heartburn, warmth and acid reflux in the interval between attacks, and the disease is aggravated after eating greasy and excessive food. Principles of nutritional therapy: 1. In the acute attack period, such as fever, vomiting, severe pain, fasting intravenous supplementation, anti-inflammatory and other treatments should be taken. In remission or asymptomatic, a low-fat, high-protein egg, high vitamin diet can be eaten. 2. Caloric energy: to meet the physiological needs, but to prevent excessive calories, generally 1800~2000 kcal/day. Obese people should limit their caloric intake to facilitate weight loss, while lean patients should increase their caloric supply to facilitate recovery. 3. Lipids: Limit fat to avoid stimulating gallbladder contraction to relieve pain. The fat in the diet before and after surgery should be limited to 20~30g/day. It can be increased to 40~50g/day as the condition improves. Cooking with vegetable oil, which skillfully supplies essential fatty acids and has a beneficial biliary effect, should be evenly distributed among three meals. Foods containing high cholesterol should be controlled, the daily intake should be less than 300 mg, and the severe hypercholesterolemia should be controlled within 200 mg to reduce the obstruction of bile solid acid metabolism and prevent stone formation. For animal offal, egg yolk, salted duck egg, pine egg, fish roe, crab yolk and other foods containing high cholesterol should be less or limited consumption. 4, supplement sufficient protein: cholecystitis in the resting period, liver function has not fully recovered, or have varying degrees of pathological damage. The supply of adequate protein can compensate for the loss, maintain the nitrogen balance, enhance the body’s immunity, to repair liver cell damage and restore its normal function is beneficial. Fish, shrimp, lean meat, rabbit, chicken, tofu and soy products with less oil are all high protein and low fat foods. Daily protein supply should be 80~100 grams (reference: every 100 grams of pure lean meat contains about 20 grams of protein, other meats are also in the upper and lower 20 grams). 5, to ensure the right amount of carbohydrate intake: carbohydrates are easy to digest, absorption, stimulation of the gallbladder is also weaker than fat and protein, but too much will cause abdominal distension. Daily supply of about 300 ~ 350 grams, should be starch-based complex carbohydrate food, such as rice, noodles, potatoes, etc., moderate restrictions on the intake of simple sugars such as sugar, glucose, obese patients should be appropriate to limit staple foods, sweets and sugar. 6, choose more green leafy vegetables, fruits and coarse grains rich in vitamins and minerals such as calcium, iron, potassium, etc. If necessary, supplement vitamin preparations and the corresponding lack of minerals. Vitamin B, C and fat-soluble vitamins are and important, especially vitamin K, which has an antispasmodic and analgesic effect on visceral smooth muscle and has a good effect on relieving pain caused by bile duct spasm and gallstone disease. 7, increase dietary fiber and water intake can reduce the formation of gallstones: fresh vegetables and melons and fruits are rich in dietary fiber, grams chopped and cooked soft, softening dietary fiber. Can use soft texture, less irritating varieties of dietary fiber, such as algae gum, pectin, etc., made into flavor food or added to the main food. Increasing the supply of dietary fiber is good for preventing constipation and reducing gallstone formation (constipation is a trigger for gallstones and cholecystitis attacks). Also drink more water to facilitate bile dilution.