If high blood pressure reaches 170mmHg, it is very serious. Because this is the highest level of hypertension, once it causes bleeding or rupture of cerebral blood vessels, it can be life-threatening at any time, so once hypertension of 170mmHg occurs, it should be treated in time. In the choice of treatment, the main two kinds of dietary adjustment and drug treatment, such as low salt, low fat, low cholesterol diet, eat more green vegetables and fruits, do not eat animal offal, fatty meat, fried, barbecue and other foods, in addition to quit smoking and alcohol. In the choice of drugs, there are nifedipine, captopril, valsartan and other drugs can treat hypertension and keep the blood pressure stable.