If myocardial ischemia occurs, it is due to a narrowing of the coronary arteries resulting in insufficient blood supply, causing symptoms of ischemia and hypoxia in the heart muscle. The general presentation is dominated by angina pectoris, and if myocardial ischemia is identified. The medication should be taken for life, which means that it should be taken regularly, quantitatively and regularly every day for the rest of the life. Attention should also be paid to regular review, and the dosage of the medication should be adjusted according to the results of the review. In terms of medication, the main ones are isosorbide mononitrate dispersible tablets, aspirin, clopidogrel, tigretol and so on, which are able to expand the crown and anticoagulation. In addition, you should prepare nitroglycerin or musk heart pills to be taken sublingually in case of angina attack and go to the hospital for specific treatment.