The difference between heartburn and angina is the location and nature of the pain. Heartburn generally refers to chest pain, a common clinical symptom, pain that occurs below the neck and above the lower edge of the ribs is considered chest pain. The causes of chest pain are complex and varied, mainly due to chest diseases, such as coronary heart disease, aortic coarctation, pulmonary embolism, pneumothorax, pleurisy; it can also be caused by other diseases, such as herpes zoster, psychological disorders and so on. The main clinical manifestation of angina pectoris is paroxysmal chest pain, and the pain is typically characterized by the following: the location is mainly located in the middle and upper part of the sternum, or in the precordial area, and the border is not obvious. It usually goes to the left shoulder, the left arm to the inner ring and little fingers, or to the neck or mandible. The predominant nature is a pressure-like, suffocating or tightening sensation, which can also manifest as a localized burning sensation, but is different from the pain of pins and needles or sharp, knife-like pain, sometimes accompanied by a sense of near-death. Some patients feel chest tightness rather than chest pain. During an attack, the patient will often stop what he or she was doing without conscious control until the symptoms can be relieved. It is recommended to seek active medical attention and standardized treatment for related symptoms.