High-pressure 170mmhg low-pressure 110mmhg belongs to grade 3 hypertension, patients need to be treated with medication and improve lifestyle to bring down the blood pressure. 1. medication: for patients with high pressure 170mmhg and low pressure 110mmhg, first of all, you need to take antihypertensive drugs under the guidance of a doctor to control blood pressure, common nifedipine retardation, benedryl and other calcium channel antagonists, enalapril, benadryl and other angiotensin converting enzyme inhibitors, and valsartan, timioxatan and other angiotensin receptor antagonists. 2. Improve lifestyle: In addition to medication, patients also need to focus on daily life management, dietary restrictions on salt intake, choose light and easy to digest and nutritious food. At the same time, appropriate exercise is conducive to physical health. Adjustment of bad mood, to avoid emotional stress, regular work and rest, less late at night. For high-pressure 170mmhg low-pressure 110mmhg patients, should go to the local regular hospital, with the doctor standardized treatment.