According to clinical blood pressure classification, low pressure 100 mmHg high pressure 120 mmHg belongs to diastolic hypertension. Commonly used antihypertensive drugs include: angiotensin-converting enzyme inhibitors, such as Benadryl, Captopril, etc.; angiotensin II receptor antagonists, such as chlorosartan, valsartan, etc.; β-blockers, such as metoprolol and bisoprolol, etc. 1. Angiotensin-converting enzyme inhibitors: such as Benadryl, Captopril and so on. Common adverse reactions include dry cough, hypotension and hyperkalemia. Allergic to this kind of drugs, suffering from severe renal insufficiency, hyperkalemia, angioedema, gestational hypertension, etc. are prohibited. 2. Angiotensin II receptor antagonists: such as chlorosartan and valsartan. These drugs have few side effects and good safety, but a few patients may have symptoms of neurologic edema after use. 3. β-blockers: such as metoprolol, bisoprolol and so on. Patients may experience fatigue, dizziness and stomach upset after taking them. If the symptoms are not relieved or worsened for a long time, they should seek medical advice. It is contraindicated for people with low blood pressure or slow pulse, and those who are preparing for pregnancy or breastfeeding should use it under doctor’s supervision. In addition, diuretic drugs such as hydrochlorothiazide and furosemide, and calcium channel blocker drugs such as nitrendipine and aminoglutethimide also have a good effect on lowering blood pressure. Patients should usually pay attention to observe the changes in blood pressure, the correct use of drugs under the guidance of a professional doctor, not to increase or decrease the dosage of drugs without authorization, and if there is any adverse reaction, you should seek medical attention in a timely manner.