High low blood pressure is high diastolic blood pressure, the main treatment drugs are diuretics, calcium antagonists, beta receptor antagonists, angiotensin converting enzyme inhibitors and so on. The specific use of drugs need to follow the doctor’s instructions. 1. Diuretics: they can be divided into potassium-preserving diuretics, thiazide diuretics and labeled diuretics. Its mechanism is mainly to promote sodium excretion to reduce peripheral vascular resistance. 2. Calcium antagonists: such as nifedipine, verapamil and diltiazem. They can lower blood pressure by reducing vasoconstrictive response. 3. β-receptor antagonists: such as metoprolol and labetalol. They can lower blood pressure by reducing myocardial contractility and slowing down the heart rate. 4. Angiotensin converting enzyme inhibitors: such as captopril, enalapril, etc.. Their mechanism is to reduce the production of angiotensin LL to achieve the purpose of lowering blood pressure. 5. Angiotensin LL receptor antagonists: such as chlorosartan, olmesartan, etc.. By antagonizing the receptor of angiotensin LL, the effect of vasoconstriction can be blocked to lower blood pressure. The above mentioned drugs must be taken under the guidance of a physician, and the medication must follow the doctor’s instructions, strictly prohibit unauthorized discontinuation of medication.