The upset stomach may be caused by physiological factors, or it may be related to chronic gastritis, peptic ulcer, cholecystitis, pancreatitis and other pathological factors. 1. Physiological factors: such as eating spicy and stimulating food, eating too fast, etc. can produce stimulation of the gastrointestinal tract, causing gastric discomfort during meals, after a good dietary habits, the symptoms can be gradually relieved. 2. Pathological factors (1) Chronic gastritis: it is a chronic inflammatory lesion of the gastric mucosa, including chronic atrophic gastritis and chronic superficial gastritis, which can cause hidden pain in the stomach after eating, and may be accompanied by acid reflux, loss of appetite and other symptoms. (2) Peptic ulcers: These include duodenal ulcers and gastric ulcers. Gastric ulcers can also cause pain and discomfort in the stomach after eating, as well as symptoms such as bloating and indigestion. (3) cholecystitis: chronic cholecystitis can cause persistent discomfort in the right upper abdomen, accompanied by heartburn, bloating, acid reflux, belching and other symptoms. If you eat greasy, high-fat food during meals, it can make the above discomfort worse. (4) Pancreatitis: Drinking alcohol during meals, overeating, etc. can cause pancreatitis attacks with stomach discomfort, accompanied by nausea, vomiting, severe abdominal pain and fever. If you are experiencing symptoms of stomach discomfort, it is recommended that you go to the hospital in time to find out the cause of stomach discomfort and then actively treat it so as not to delay your condition.