Hypertension is harmful to human body, mainly in the following aspects: 1. Long-term hypertension will lead to myocardial hypertrophy, and the continuous increase of blood pressure will make the heart need to overcome greater resistance when pumping blood. Long-term operation of the heart under high pressure will lead to myocardial hypertrophy and decreased contractility, which will eventually lead to heart failure. 2. Hypertension can damage blood vessels, and the arterial wall of the human body is smooth, but long-term hypertension will lead to thickening of the vascular wall and narrowing of the vascular lumen. In addition, the blood vessel wall will be damaged, and over time, blood vessels will be prone to problems and cardiovascular diseases. 3. Hypertension may also damage people's brains. Our common strokes include ischemic stroke. The principle is that the cerebral artery is narrowed, and at this time, accompanied by high blood pressure, blood vessels are easy to burst, which directly threatens people's lives. 4, hypertension can also damage people's eyes, and in the target organ damage of hypertension, eye damage can not be ignored. Long-term hypertension will lead to spasm and sclerosis of retinal artery, which will directly affect patients' vision and even lead to insomnia in more serious cases. 5. Finally, hypertension may lead to renal function damage. In fact, hypertension and renal damage are mutual, and their mutual influence will often lead to more serious consequences and eventually lead to renal failure.