The vague pain in the stomach after eating is considered to be related to having stomach disease disease, improper diet, ureteral stones, and gynecological diseases. With gastritis and peptic ulcer, excessive secretion of gastric acid stimulates the gastric mucosa, and the gastric mucosa is damaged with weakened protection, which causes vague pain in the stomach and intestines after eating due to weakened gastrointestinal digestive function and inability to digest the food eaten. Abdominal pain after meals may also be due to improper diet, after eating stimulating food, poorly digested food caused by intestinal dysfunction, there may be abdominal pain phenomenon. Excessive exercise after meals, emotional excitement and bad mood can also cause abdominal pain after meals, which may also be the pain caused by ureteral stones. If the patient is female, gynecological diseases may also induce left lower abdominal pain, it is best to go to the hospital for endoscopy to confirm the diagnosis and then drug treatment.