Hypertension is not a disease that is completely irreversible. In the case of primary hypertension, primary hypertension is irreversible because there is no cure for primary hypertension. In secondary hypertension, if the secondary factors are removed, the patient may be able to return to a normal condition. However, in some cases of secondary hypertension, because the primary disease is difficult to cure, it is also difficult to restore the blood pressure to normal, and some systematic medication is needed to treat it. In primary hypertension, although there is no cure, we need to take medication systematically to keep the blood pressure within the normal range to prevent some heart, brain, kidney or fundus complications. Once heart, brain, kidney or fundus complications occur, it is difficult to return to normal, so antihypertensive treatment is very important. The ultimate goal of antihypertensive treatment is to reduce the incidence and mortality of human and cerebrovascular disease in hypertensive patients.