Patients with essential hypertension are not allowed to stop taking their medication, because patients with essential hypertension need to take medication for life. For this disease, so far there is no way to cure it, and without medication, the patient’s blood pressure will be unstable and will rebound, but higher, and in the long run hypertension will cause damage to the heart, brain and blood vessels as well as the fundus, kidneys and other multiple organs. Therefore, patients with essential hypertension should not only take medication for life, but also control their blood pressure until it reaches the target as much as possible, and the level should be smooth and try not to fluctuate too much. For the current target value of blood pressure control, the general population should control blood pressure at less than 140/90 mmHg. If combined with diabetes and heart failure, it is better to control blood pressure at 130/80 mmHg, and people who are over 70 years old can relax slightly, and blood pressure can be controlled at less than 150/90 mmHg.