Hypertension level 3 is very high risk how long can live can not be generalized, and the severity of the patient’s condition has a direct relationship. Hypertension level 3 indicates that the blood pressure level systolic blood pressure ≥ 180mmHg, and/or diastolic blood pressure ≥ 110mmHgmmHg, to reach hypertension level 3 belongs to the high-risk patients, with the risk of cardiovascular and cerebral vascular diseases, a few patients may occur serious cerebral hemorrhage, life-threatening, and even the possibility of sudden death. Although the condition of hypertension grade 3 is serious, the blood pressure level can be actively controlled by medication. If the patient has no obvious risk factors and the blood pressure level is controlled smoothly, the risk of cardiovascular and cerebrovascular diseases will be significantly reduced, and some of the patients can survive for a long time, and it will not have a significant impact on the survival time. Patients with severe hypertension should actively control their lifestyle and use regular antihypertensive medication under the guidance of a physician.