According to the survey of Health Road, hypertension is a major disease. Hypertension is a clinical syndrome characterized by increased systemic arterial pressure and peripheral arteriole resistance, accompanied by increased cardiac output and blood volume in different degrees. In the classification of hypertension, Grade III hypertension refers to systolic blood pressure greater than or equal to 180mmHg, and diastolic blood pressure greater than or equal to 1 10mmHg, which is a serious situation with symptoms such as headache, arrhythmia, palpitation and tinnitus. If not treated in time, it will lead to various cardiovascular and cerebrovascular diseases, such as cerebral hemorrhage, cerebral infarction, coronary atherosclerotic heart disease, etc., so grade III hypertension.