The main blood pressure lowering drugs are about these kinds of: 1, the most commonly used is the calcium antagonist, the conventional use of diphenhydramine and so on, like amlodipine, levamlodipine benzoate, nivadipine, nifedipine; 2, angiotensin converting enzyme inhibitors, that is, ACEI, that is, this kind of benefit, like enalapril, benazepril, fosinopril. The second and third generation is the sartan piece, like valsartan, coxsartan, irbesartan and so on; 3, diuretics, the elderly sometimes difficult to control some of these persistent hypertension, diuretics must be used, it is the first line of drugs, like thiazides, spironolactone, and tachyphylaxis and so on; 4, the clinical use is more beta-blockers, like metoprolol, bisoprolol, propranolol and so on; 5, alpha receptor blockers, with less, like prazosin, terazosin, etc., generally unless the treatment of refractory hypertension, which is the oral antihypertensive drugs, in addition to intravenous, like uradil, sodium nitroprusside, and nitrates, etc. also have a role in lowering blood pressure.