The difference between angina pectoris and esophagitis is mainly from the location, nature, accompanying symptoms and related tests. Angina pectoris occurs in the posterior sternum or precordial region, and is characterized by a dull, constricting, or individually burning sensation, often accompanied by a sense of near death and fear, and can radiate to the back of the left shoulder and the throat and neck, and is not related to meals, and can be relieved by rest, with one attack lasting about 3-5 minutes. Esophagitis is mainly located behind the sternum or below the glabella, often extending upward from under the sternum, with symptoms of heartburn, acid reflux, and often accompanied by reflux symptoms, burning pain, occurring one hour after eating, and can be aggravated if lying down or bending over. The difference in examination can be made by electrocardiogram, cardiac ultrasound or coronary vascular examination to clarify angina pectoris; esophagitis can be clearly diagnosed by gastroscopy.