Many people think that “toothache is not a disease” and that they can just put up with it. But in fact, sometimes a toothache can be a result of heart disease. Toothache caused by coronary heart disease is medically known as “cardiogenic toothache”, and most people suffering from this disease are elderly people with a history of hypertension and diabetes. Cardiac toothache is a kind of radiating pain, which is a kind of atypical angina; in addition, angina can also be manifested as jaw, neck and shoulder, epigastric pain or tightness in the throat. The clinical characteristics that distinguish cardiogenic toothache from common toothache are as follows: first, toothache is severe and sudden, especially jaw pain and lower toothache, but no obvious dental disease; second, the site of toothache is not exact, often several teeth feel pain, while general dental disease can find the corresponding diseased tooth site; third, toothache combined with symptoms such as chest tightness, chest pain or shoulder and back pain; fourth, toothache is induced by exertion or emotional excitement, and can be relieved by rest or containing Fifth, most patients have a history of hypertension and diabetes mellitus, and toothache can be a precursor symptom of angina pectoris or myocardial infarction, and if severe toothache occurs several days or hours before the onset of myocardial infarction, it often indicates a serious prognosis. Finally, in order to avoid delaying the disease, it is recommended that if middle-aged people over 50 years of age have sudden toothache or cannot be relieved by taking antipyretic and analgesic drugs, they should consider that it may be cardiogenic toothache and should go to the hospital promptly and undergo electrocardiogram, ultrasound or myocardial enzymology tests as prescribed by the doctor for early and definite diagnosis and treatment.