Usually fasting for 24-48 hours after surgery, generally by intravenous fluids to supplement the basic calories, until intestinal function recovery after the anal vent, you can try to drink a small amount of warm water or glucose drinks; 3-4 days after surgery can enter a small amount of clear liquid (no residue) diet of about 50 ml, 6-7 meals; 4-5 days after surgery can enter a half amount of clear liquid (no residue) diet, gradually increased to 100-200 ml, can also be The quality and quantity of the diet can be gradually increased according to the patient’s specific condition. No matter fluid, semi-liquid diet or ordinary diet, the principle of supplementing protein, vitamins and other nutrients should be adhered to as much as digestion and absorption allow, both to supplement nutrition to restore the patient’s health and to reduce the burden on the stomach and intestines in the process of providing diet. All post-surgical patients should be supplemented with vitamin-rich foods in their diet, with optional fruit juices and vegetable soups for consumption. It is generally accepted that when there is less than 100 mg of vitamin C in the daily diet, additional vitamin C tablets should be added to it to make up for it to more than 100 mg. Bleeding during surgery and surgery stimulates increased secretion of adrenal cortical function, all these factors can lead to an increase in potassium excretion by the body and a decrease in blood potassium and intracellular potassium concentration, so attention should be paid to increasing foods containing more potassium in the diet of patients after surgery, such as gravy, vegetable soup, fruits with skin, etc.