There are four main categories of drugs for high blood pressure: 1. diuretics, which mainly reduce the volume load of the body and play a role in lowering blood pressure, including hydrochlorothiazide, spironolactone, indapamide, etc. 2. beta-blockers, which are mainly used for patients with rapid heart rate and hypertension, such as metoprolol extended-release tablets, bisoprolol, carvedilol, labetalol, etc. 3. calcium antagonists, which are not affected by high salt diet and alcohol consumption, and have fewer side effects. These drugs are particularly suitable for patients with hypertension with coronary heart disease or heart failure, such as enalapril, benazepril, chlortalidipine, valsartan, etc.