There are five major categories of antihypertensive drugs for hypertension, as follows: 1. Diuretics, representing drugs such as hydrochlorothiazide, furosemide and indapamide. Diuretics are used more often, and the effect of lowering blood pressure is slow and steady, and lasts relatively long, suitable for mild to moderate hypertension. 3, calcium channel blockers, these drugs are nifedipine, amlodipine, lacidipine, felodipine, etc., this drug has a rapid onset of action, strong antihypertensive effect, small individual differences, the impact on blood sugar, lipids is also not large, the use of this drug after the compliance is also quite good, it is suitable for combined diabetes, coronary heart disease and peripheral vascular disease. It is suitable for patients with combined diabetes, coronary heart disease and peripheral vascular disease. The main disadvantage is that the initial treatment may have symptoms such as rapid heart rate and lower limb edema, but most patients can tolerate them. 4. angiotensin-converting enzyme inhibitors, such as captopril, benazepril, enalapril, fosinopril, perindopril, etc., which are especially suitable for patients with heart failure, myocardial infarction, atrial fibrillation and renal target organ damage, and are also very suitable for diabetic patients. . Its adverse effects are irritating dry cough and angioedema, and it is contraindicated in hyperkalemia, as well as in pregnant women and patients with bilateral renal artery stenosis.5. Angiotensin II receptor antagonists, the main drugs in this category are coxsartan, valsartan, irbesartan, telmisartan, candesartan, etc. The contraindications of this drug are the same as those of the previous drug, but it generally does not cause irritating dry cough, and the effect is relatively long-lasting, slow and effective. In addition to the five major types of antihypertensive drugs mentioned above, there are also some sympathetic nerve inhibitors, such as reserpine, colistin, etc.