Heart attack precursor toothache is usually paroxysmal sharp, dull, burning pain, and most patients are usually accompanied by varying degrees of coronary heart disease symptoms. The pain before myocardial infarction attack is mostly manifested in the jaw and teeth. The site of the toothache is not very clear, most of them are in the left mandibular posterior region, and the pain area is diffuse and poorly localized. Similar to acute pulpitis toothache, it is usually paroxysmal sharp pain, dull pain, burning pain, etc. It is a specific type of atypical acute myocardial infarction or angina pectoris and is highly susceptible to misdiagnosis. The main cause of myocardial infarction precursor toothache is the accumulation of metabolites produced during myocardial ischemia, which stimulates its vegetative nerve conduction to the central nervous system, the brain will make a wrong judgment, so that the patient will feel severe toothache or jaw pain, sometimes spreading to the back or other parts of the body. If people around you experience severe toothache with symptoms such as tightness in the chest, shortness of breath, and pain in the precordial area, you should go to the emergency department or cardiology department. People with a history of heart disease and high blood pressure in particular need more attention. This could be a precursor to myocardial infarction.