Heartburn refers to pain in the area of the heart and can be a clinical precursor to coronary artery disease or costochondritis. Coronary heart disease usually refers to coronary atherosclerotic heart disease. Coronary arteries are important blood vessels responsible for supplying oxygen and blood to the heart. When atherosclerosis occurs in the coronary arteries, it can lead to narrowing of the coronary arteries or even cause occlusion. If the myocardial oxygen consumption increases, it will cause insufficient blood supply to the myocardium, which in turn induces angina pectoris. When suffering from costochondritis, due to the presence of inflammatory reactions in the costochondral region, the inflammatory products will form an irritation to the surrounding tissues and organs, and then may produce radiating chest pain. When there is pain in the heart area, it is important to pay attention to it, consult a doctor in time, and treat the symptoms.