After major or total gastrectomy, patients with gastric cancer should pay attention to nutritional supplementation and adjust the amount and type of food as appropriate, taking into account the patient’s own dietary tolerance and stomach capacity. In a word, meals should be nutritious and easy to digest, and in general, patients should follow the following principles. 1.Less food and more meals: Since only a small part of stomach remains after radical resection of gastric cancer or jejunum is substituted for stomach after total gastrectomy, the eating capacity is obviously reduced compared with the original one, and only by increasing the number of meals can make up for the lack of food quantity and meet the body’s demand for nutrients. Therefore, patients should develop good eating habits, eat at regular times, eat regularly and quantitatively, and insist on eating less and more meals, with 5 to 6 meals per day being appropriate. The main food and side dishes should be thin, soft and easy to digest. Never overeat. 2, eat more protein-rich food: the early postoperative period should be eaten in accordance with the order of clear, liquid, semi-fluid, soft and general food. The liquid diet should be rice soup, egg soup, vegetable soup and lotus root powder. The semi-liquid diet should be high protein, high calorie, high vitamin, low fat, fresh and easy to digest food. The best source of animal protein is fish. Fish protein is of high quality and easily digested and absorbed by the body, so we encourage more fish, such as yellow croaker and crucian carp. After entering the general diet, you should eat more vegetables, fruits and other foods with high fiber to keep the stool open. 3, eat less sweets and fat: too much sugar intake will cause discomfort symptoms after eating, therefore, the intake of too sweet food should be avoided. Fat energy supply does not exceed 35% of the total energy, avoid eating animal fat, should choose easily digestible and absorbable fat, such as vegetable oil, cream, egg yolk, etc. 4, food taboos: ① avoid eating cold, overheated, coarse and hard food; ② avoid eating spicy and stimulating condiments, such as pepper, mustard, etc.; ③ strictly forbid drinking strong wine, strong tea and other stimulating foods; ④ avoid overly oily and too rough food, such as fried chicken, fries and other fried foods. 5. Prevention of anemia: appropriate use of animal liver and fresh vegetables to improve the acquisition of various vitamins and minerals. After total gastrectomy for gastric cancer, iron deficiency anemia is prone to occur, so appropriate lean meat, fish, shrimp, animal blood, animal liver and foods rich in protein and iron such as dates, green leafy vegetables and sesame paste can be consumed to prevent anemia. 6, chew slowly: after surgery, the grinding function of the stomach is lacking, so the chewing function of the teeth should play a more important role. For coarse and indigestible food, chew and swallow carefully and slowly.