Gastric paroxysm may be caused by gastric ulcer, chronic gastritis, stomach cramps and other diseases as well as other diseases. 1. Chronic gastritis: chronic inflammation of the gastric mucosa caused by various reasons, which can be manifested as epigastric pain, fullness and distension, and may be accompanied by loss of appetite, acid reflux, nausea, belching and so on. 2. Gastroparesis: It is a strong contraction of the stomach due to the twitching of the stomach muscles. It can be manifested as sudden abdominal pain, and the pain can also radiate to the left chest, back, left shoulder blade and other parts of the body. 3. Gastric ulcer: due to inflammatory defects in the gastric mucosa, the lesion can penetrate the mucous membrane muscle layer, or even deeper layer of the disease, which can be manifested as epigastric pain, abdominal pain is mostly seen in half an hour to one hour after meals. 4. Other diseases: angina pain can radiate to the stomach, resulting in stomach pain; acute cholecystitis, acute pancreatitis and other diseases can have epigastric pain, patients can be mistaken for stomach pain. It is recommended to go to the hospital when gastric paroxysm occurs, and ask the doctor to make a judgment and a clear diagnosis.