1, supplemental iron: lack of gastric acid after gastrectomy, affecting the absorption of iron, can lead to iron deficiency anemia. Therefore, you should insist on using iron pot as an important cooking utensil, and take ferrous sulfate preparation according to the specific situation, and choose to eat animal liver, beans, spinach, red dates and other foods that contain more iron. 2, food should be light: give high protein, high vitamin, high fiber easily digestible food, eat more fresh vegetables and fruits, eat less fat, eat less or no pickled products. Because the pickled products contain more dimethyl nitrite, which is easily converted into carcinogenic nitrosamines in the body. Drink less or no high-concentration beverages, avoid spicy and stimulating food and too cold and too hot diet. The total daily calorie intake should be 1500 to 2000 kcal. 3, diet care: stomach is one of the important digestive organs of the body, with movement, storage and secretion functions. Through the peristaltic movement of the stomach, the food temporarily present in the stomach is stirred, ground, and mixed with the secreted gastric juice, and then discharged quantitatively into the small intestine for further digestion and absorption. After gastrectomy, its movement, storage and secretion functions are changed to different degrees, so the issue of diet is one of the key issues after gastrectomy. In order to adapt to the current situation of digestive tract reconstruction, diet should pay attention to the gradual transition from thin to thick, from small to large amount, from low to high calories, so that the intake of sugar, protein and fat gradually matches the needs of the body. Specific points should be done as follows: small amount of meals: 5 to 6 meals per day, the amount of food is based on the principle of no discomfort to the self. Start from liquid food (e.g. rice juice, egg flower soup, lotus root powder, milk, egg custard, etc.) to semi-liquid food (e.g. thin rice, wontons, noodles, etc.), and finally transition to ordinary diet. The time of diet transition is in the hands of the patient. Generally, semi-liquid diet is introduced two weeks after surgery, and normal diet can be resumed six months after surgery.