Analysis of illness: Cholecystectomy is a common operation in biliary surgery. There are two kinds of resection: antegrade (starting from cystic duct) and retrograde (starting from the bottom of gallbladder). Anterograde cholecystectomy is the first choice because of its less bleeding and simple operation. However, when the inflammation is serious, the gallbladder is closely adhered to the surrounding organs, and it is not easy to expose the cystic duct and gallbladder artery, it is appropriate to perform retrograde resection. Sometimes it is necessary to combine the two. Suggestion: Reduce the intake of fat and cholesterol. After cholecystectomy, due to the insufficient amount of concentrated bile, if too much fat and cholesterol are ingested, the digestive function will be disordered, and fatty diarrhea will occur in severe cases, leading to malnutrition. Therefore, try to use vegetable oil instead of animal oil, try to eat less thick soup, thick fish soup, thick chicken soup and other foods, and reduce the intake of nuts with high fat content such as walnuts, almonds, peanuts, melon seeds and pistachios. Eat more foods with high dietary fiber. Coarse grains are very beneficial to human body, including corn, millet, sweet potato, oats and other coarse grains, which can promote bile excretion. Control calorie intake, lose weight, control the total amount of food, have seven or eight full meals, and maintain a moderate weight. Remember to add quality protein. You can choose low-fat and high-quality protein, which is mainly composed of poultry, fish, shrimp, tofu and bean products, with little oil, because protein is sufficient, which is beneficial to repair the liver cell damage caused by cholecystitis and gallstones. Eating more fruits and vegetables can also reduce the formation of cholesterol, reduce the absorption of fat and sugar, and thus reduce blood lipids and blood sugar. Vegetables and fruits are rich in vitamins and minerals, which can improve the metabolic disorder of patients and help them recover. Vegetables and fruits are also rich in dietary fiber.