Stomach pain in the afternoon is usually associated with chronic gastritis, gastric ulcers, and duodenal ulcers. Chronic gastritis is mainly manifested by stomach discomfort, and many patients with chronic gastritis experience persistent pain that is not time-limited. Some people have pain mainly in the afternoon, if the pain occurs in the afternoon after 1-2 hours or so after a meal, this situation is mostly due to gastric ulcer, gastric ulcer patients after the intake of food, food in the digestion will stimulate excessive secretion of gastric acid, causing irritation to the ulcer surface, and therefore will cause pain. When the patient’s pain is around 4-5 pm, it is necessary to be alert to the cause of duodenal ulcer. At 4-5 pm, the food in the stomach has basically been digested, and because the concentration of stomach acid is relatively high, it will violate the duodenal mucosa when it is discharged into the duodenum, thus causing a painful feeling in the stomach.