Chronic myocardial ischemia is mainly treated with platelet aggregation inhibiting drugs such as aspirin and vasodilating drugs such as nitroglycerin. Due to coronary atherosclerosis and other reasons, the blood vessels supplying blood to the myocardium gradually become narrowed, resulting in myocardium due to insufficient supply of oxygen and gradually appear chest tightness, palpitations, dyspnea and other symptoms, this process is called chronic myocardial ischemia when it progresses slowly, and it may evolve into myocardial infarction if not treated in time. 1. Drugs that inhibit platelet aggregation, such as aspirin, can prevent thrombosis, reduce the risk of myocardial infarction, and slow down the process of atherosclerosis. 2. Vasodilator drugs: such as nitroglycerin, etc., can relax the smooth muscle of blood vessels, so that the cardiovascular dilatation, which helps to alleviate myocardial hypoxia. It should be noted that before using the drug should consult a physician, do not use the drug without authorization.