Low blood pressure refers to diastolic blood pressure, and high blood pressure refers to systolic blood pressure; when the diastolic blood pressure is 103 mmHg and the systolic blood pressure is 145 mmHg, the standard of grade 2 hypertension has been reached, and antihypertensive medication is needed; the commonly used antihypertensive medications in clinic are angiotensin-converting enzyme inhibitor (ACEI)/angiotensin receptor 2 antagonist (ARB), β-receptor blocker, calcium channel blocker, diuretic, and so on. diuretics, etc. 1. ACEI/ARB: Mainly by blocking the generation of vasodilator or binding to the receptor, the vasodilator, to achieve the purpose of lowering blood pressure; representative drugs are captopril, valsartan and so on. 2. β-blockers: through slowing down the heart rate, weakening myocardial contractility and expanding peripheral blood vessels to achieve the purpose of antihypertensive; representative drugs are propranolol, metoprolol and so on. 3. Calcium channel blockers: block calcium channels, reduce intracellular calcium ions, weaken myocardial contractility, while vascular smooth muscle diastole, to achieve the purpose of antihypertensive; representative drugs are nifedipine, amlodipine, etc.. 4. Diuretics: through diuretic effect to discharge excess water, so that the blood volume is reduced, to achieve the purpose of lowering blood pressure; representative drugs are spironolactone, hydrochlorothiazide and so on. When patients find high blood pressure, must go to the hospital for a comprehensive examination, clear hypertension is primary or secondary, and whether there is target organ damage, and under the guidance of specialists to start standardized drug treatment as soon as possible, so as not to cause adverse consequences.