The first-line anti-hypertensive drugs have the following five categories: 1, calcium antagonists, for calcium ion antagonists representative drugs such as amlodipine besylate, nifedipine, etc., clinically common Loxodipine. 2, angiotensin converting enzyme inhibitors, also known as ACEI class of drugs, ACEI class of drugs such as captopril. 3, angiotensin receptor antagonists, also known as ARB class of drugs, this class of drugs representative drugs are valsartan. 4, diuretics, clinically hydrochlorothiazide, furosemide, spironolactone, etc.. 5, beta-blockers, commonly used drugs such as metoprolol tartrate. 4, diuretics, in clinical practice, there are hydrochlorothiazide, furosemide, spironolactone, etc. 5, beta-blockers, commonly used drugs are metoprolol tartrate, metoprolol succinate, etc.