Hypertension alone is not scary; hypertension combined with severe complications often results in a poor prognosis. Hypertension is a clinical syndrome mainly characterized by increased blood pressure in the arteries of the body circulation, which may be accompanied by functional or organic damage to the heart, brain, kidneys and other organs. Hypertension is the most common chronic disease and the most important risk factor for cardiovascular disease. The cardiac damage combined with hypertension can often be seen in coronary heart disease, the most serious type being myocardial infarction and even sudden death. Damage to the brain in combination with hypertension includes strokes, mainly ischemic and hemorrhagic strokes, which often carry a poor prognosis, such as hemiparesis and limited mobility. Hypertension can be accompanied by renal damage, and patients with renal damage may develop oliguria, anuria, and uremia. Therefore, when simple hypertension is no need to be particularly afraid of, just need to control blood pressure, prevent target organ damage, if hypertension combined with some pre-existing target organ damage, need to actively systematic diagnosis and treatment.