Commonly used anti-hypertensive drugs include diuretics, such as furosemide; calcium channel blockers, such as nifedipine; and angiotensin-converting enzyme inhibitors, such as enalapril. 1. Diuretics, commonly used in clinical practice include furosemide, torasemide, hydrochlorothiazide, spironolactone and so on. 2. β-blockers, such as propranolol, metoprolol and so on. 3. calcium channel blockers, such as nifedipine, felodipine, amlodipine, etc. The latter two are long-acting agents. 4. ACEI class, i.e. angiotensin-converting enzyme inhibitors, such as captopril, benazepril, enalapril, etc., which have antihypertensive effect and also inhibit myocardial remodeling. 5. ARB class, that is, angiotensin II receptor antagonists, such as Irbesartan, valsartan, etc.. 6. Finally, there are central antihypertensive drugs, such as reserpine, which may be used when the above antihypertensive drugs are not effective. Hypertensive patients under the guidance of cardiovascular physicians, based on blood pressure, choose one or more drugs combined.