1.Gastroparesis: periodic episodes of pain under the saber, relieved after eating. Gastric pain is usually burning, hunger or tooth-biting pain in the upper abdomen or under the saber, and the pain can be relieved by drinking, eating, and taking acid-suppressing drugs. Most gastric diseases are chronic in course, with periodic attacks, often related to seasonal changes, dietary disorders, mental factors or long-term use of stimulant drugs. The symptoms of gastric pain are: pain often triggered by cold weather, cold food, pain accompanied by a cold feeling in the stomach, 2, angina: pain behind the sternum, fixed position, short attack time. The typical site of pain in patients with angina is behind the sternum, either to the left or to the right, and the range of pain is about the size of the palm of the hand. The angina is paroxysmal, usually lasting 3 to 5 minutes each time and rarely more than 15 minutes. In nearly half of the patients, the chest pain can radiate to the left shoulder, left arm, and the inside of the fingers. Generally, the site of pain is fixed for each attack. 3. Biliary colic: pain in the right upper abdomen, which may radiate to the right shoulder. Biliary colic has the potential to recur, sometimes lasting for decades. The pain is intermittent and dull, and the pain is located in the right upper abdomen. When stones obstruct the bile ducts, the pain may radiate to the right shoulder and is often accompanied by nausea, vomiting, and fever. In conclusion, the pain caused by cholecystitis mainly manifests as persistent pain in the right upper abdomen with paroxysmal intensification, which may radiate to the right shoulder and back; stomach pain is usually vague and common. Generally, it can be distinguished from cholecystitis by abdominal ultrasound or CT.