Gastroparesis and angina have obvious differences in pain triggers, nature of pain, location and etiology, as follows:1. Gastroparesis: generally gastric acid stimulation of the gastric mucosa or gastroduodenal ulcers, gastrointestinal smooth muscle spasms and pain, mostly associated with eating before and after and improper dietary stimuli. The pain is burning pain or hidden pain, occurs in the upper abdomen or left, right position, often accompanied by acid reflux, belching, abdominal distension, lethargy, fatigue, etc. 2, angina pectoris: paroxysmal, squeezing pain in the anterior region of the heart caused by insufficient myocardial blood supply, in the upper part of the stomach, often associated with fatigue, emotional fluctuations. The pain is gradually relieved by rest and taking nitroglycerin, and the attack is often accompanied by chest tightness, sense of panic, and even a sense of near death. Pain is a danger signal of pathology in the organism and a protective mechanism. No matter where the pain occurs, you should seek medical attention for systematic examination and treatment to avoid delay.