Stage III hypertension refers to a systolic blood pressure of 180 mmHg or more and a diastolic blood pressure of 110 mmHg or more with any of the following features: hypertensive encephalopathy, cerebral hemorrhage, cerebral infarction, cardiac insufficiency, renal insufficiency, uremia, fundus hemorrhage or fundus exudate, and optic papilledema, as long as one of these features is present, the patient is in stage III hypertension. Stage III hypertension is the most serious stage of hypertension, which is prone to accidents, with the possibility of acute myocardial infarction, acute cerebral hemorrhage, acute left heart failure, and acute renal failure, a condition that can seriously affect the patient’s quality of life and even directly endanger the patient’s life. Therefore, for hypertension stage III, we must pay high attention to it. First of all, we should control the blood pressure smoothly, avoid the fluctuation of blood pressure, and protect the heart, brain, kidney and fundus from damage, so we must take the drugs in a standardized way and go to the hospital for regular follow-up.