Hypertension causes myocardial ischemia by the following two mechanisms: 1. Elevated blood pressure in patients can overload the heart with pressure, stimulating cardiomyocyte hypertrophy and interstitial fibrosis, causing left ventricular hypertrophy and dilation. After the heart enlarges, the coronary artery reserve decreases, and if the heart rate accelerates, the myocardial oxygen consumption increases and myocardial ischemia occurs under the endocardium. 2. Poor long-term blood pressure control can cause coronary artery atherosclerosis, making the coronary artery narrow, and if the heart rate becomes faster, the myocardial oxygen demand increases and myocardial ischemia occurs. These two ischemic mechanisms of the heart need regular administration of oral antihypertensive drugs, you can choose ACEI, ARB or beta-blockers to give treatment, which can antagonize neuroendocrine, inhibit ventricular remodeling, reduce myocardial oxygen consumption, which can reduce myocardial oxygen consumption and prevent myocardial ischemia.