At present, there are 5 major categories of antihypertensive drugs in the clinic, such as diuretics, calcium channel blockers, etc. Which one is better should be decided according to the patient’s own situation. 1. Diuretics, such as hydrochlorothiazide, are suitable for people with simple systolic hypertension, hypertension in the elderly, etc. Low potassium symptoms may occur with long-term use. It should be noted that this drug is prohibited for people with hyperlipidemia and gout. 2. Calcium channel blockers, such as nifedipine, can resist atherosclerosis, so it is suitable for the antihypertensive treatment of elderly patients, but after taking it, dizziness, headache, nausea and other adverse reactions may occur. 3. Angiotensin-converting enzyme inhibitors, such as enalapril maleate, for diabetes mellitus, renal disease and other hypertensive people with better antihypertensive effect, may appear angioedema, irritating dry cough and other adverse reactions. 4. Angiotensin receptor antagonist, such as chlorosartan, its antihypertensive effect is long-lasting and smooth, suitable for the combination of cardiac infarction, atrial fibrillation and other hypertensive people, its adverse effects are less, but may also appear angioedema. 5. β-receptor antagonists, such as propranolol, can inhibit the contraction of the heart, especially for young and middle-aged patients with fast heart rate, adverse effects include bradycardia, atrioventricular block and so on. It is recommended that people with high blood pressure should go to the hospital in time and ask the doctor to evaluate their condition and then give them medication, and should not take medication privately to avoid adverse consequences.