The antihypertensive drugs commonly used in clinical practice include hydrochlorothiazide, irbesartan, nifedipine, felodipine, propranolol, metoprolol, captopril, enalapril, crosartan, valsartan, etc., but they are not limited to these 10 drugs, there are other antihypertensive drugs. Patients with different causes of elevated blood pressure use different antihypertensive drugs, mainly the following types: 1. Diuretics: commonly used diuretic antihypertensive drugs include hydrochlorothiazide, furosemide, aminoglutethimide, spironolactone, etc. The occurrence of hypertension is closely related to the increase of blood flow in the blood vessels, diuretics can lower blood pressure by reducing blood volume; 2, calcium channel blockers: common nifedipine, amlodipine, etc., can reduce blood pressure by inhibiting smooth muscle and reducing vasoconstriction; 3, beta-blockers: propranolol, metoprolol, bisoprolol, etc. are commonly used beta-blockers. Patients with hypertension accompanied by angina can be treated with such drugs, which can act on the central blood pressure regulation mechanism to achieve the purpose of lowering blood pressure; 4, angiotensin-converting enzyme inhibitors: mainly captopril, enalapril, benazepril, etc., by inhibiting the formation of angiotensin, can achieve the role of vasodilation and lowering blood pressure; 5, angiotensin II receptor blocking drugs: commonly used coxsartan, valsartan, etc., such drugs. Valsartan, etc. Such drugs can be combined with angiotensin-converting enzyme inhibitors to further strengthen vasodilation and achieve the purpose of lowering blood pressure.