There are differences in diet after total gastrectomy due to the recovery of intestinal function. On the day after total gastrectomy, due to the re-establishment of the digestive tract, it takes time to heal, so on the day after the operation, the patient needs to be fasted with water, and be fed with intravenous nutrients to maintain the nutritional supply. Three to five days after the operation, the patient’s intestinal function gradually recovers, and when the gas in the intestines is expelled, the patient can eat a small amount of liquid diet such as rice soup, rice porridge, etc. If the patient recovers well and there is no complication, the patient can have a small amount of liquid diet. If the patient recovers well and there are no complications, he/she can eat semi-liquid diet such as thin rice, soft noodles, etc. 1 week after the operation. Around 0 days after the operation, if the patient still has no discomfort, he/she can eat a normal diet, such as rice, fish, meat, vegetables, fruits and so on. It is recommended that patients eat small meals, light diet, avoid spicy, greasy and other stimulating foods, and should not eat uncooked food. Lie down for about 30 minutes after eating to prevent the occurrence of dumping syndrome. Increase physical exercise appropriately in daily life and avoid exertion. Focus on gradual and orderly progress, and eventually return to normal diet.