Gastrectomy for gastric cancer can be divided into distal gastrectomy, proximal gastrectomy and total gastrectomy, and a gastrointestinal decompression tube and nasogastric tube are placed before surgery. The patient can eat a small amount of clear liquid food, such as rice juice, diluted lotus root powder, honey water, noodle soup, green vegetable soup, etc., and drink 50ml each time, and drink more than 10 times a day, and start to give enteral nutrition through nasal intestinal tube. Red date congee, egg soup, etc. A semi-liquid diet can be started 9 days after total gastrectomy. Gas-producing foods such as milk, soy milk and foods containing a lot of coarse fiber, such as celery, soybean sprouts and onions, should not be consumed. Within 1 year after gastrectomy, patients should always pay attention to diet to prevent diet-related complications, such as: 1. To insist on eating less and more meals, a little less at each meal, 5-6 meals a day, in order to gradually restore the function of the residual stomach after volume reduction, and avoid overeating. 2.Prevent anemia. After gastrectomy, due to the reduction of gastric acid and the acceleration of peristalsis of the upper end of the small intestine, it disrupts the physiological function of digestion and thus affects the absorption of protein and iron, thus making it easy for iron deficiency anemia to occur. Therefore, patients can eat more lean meat, fish and shrimp, animal blood, animal liver, kidney, egg yolk, soybean products and food rich in protein and iron such as dates, green leafy vegetables and sesame paste. 3, due to the weakened physiological function of the stomach, usually do not eat cold, hard and coarse fiber food, avoid eating spicy and stimulating seasoning crystals, such as pepper, mustard, etc., strictly forbidden to drink strong alcohol.