After removal of the pylorus, eating is not exactly the same as normal, and the type and amount of diet will change. The pylorus is the connection between the stomach and the duodenum and contains pyloric glands, in which G cells secrete gastrin, which promotes the secretion of gastric acid and pepsinogen, delays gastric emptying, and promotes gastrointestinal motility and the growth of gastrointestinal epithelium. The pyloric sphincter has the function of delaying the emptying of gastric contents as well as preventing the reflux of intestinal contents into the stomach. After removing the pylorus, the normal digestive function of the human body is affected, the ability to digest food decreases to a certain extent, and due to the lack of the anti-reflux effect of the pylorus, intestinal contents may reflux into the stomach, causing damage to the gastric mucosa. After the patient regains consciousness and exhausts after the operation, he should be given liquid diet first, and gradually resume daily diet with the recovery of physical condition, but eat small meals, gradually increase the amount, avoid overeating, do not eat spicy and stimulating food, do not eat greasy and too sweet food, eat more vegetables and fruits.