Rapid rebound of blood pressure will result in large fluctuation of blood pressure, which mainly damages the heart and blood vessels, and may be followed by hypertensive emergencies, resulting in damage to vital organs such as the heart, brain, and kidneys. Hypertensive emergencies include hypertensive encephalopathy, intracranial hemorrhage, cerebral infarction, aortic coarctation, acute heart failure, acute glomerulonephritis, and eclampsia during pregnancy. If the diastolic blood pressure remains elevated, headaches, blurred vision, hemorrhages in the fundus of the eye, and severe kidney damage may also occur. The risk of hypertensive emergencies is high, so hypertensive patients should take their medication regularly to keep their blood pressure levels stable. If a rebound of hypertension occurs, attention should also be paid to slowly lowering blood pressure, and medication should be used appropriately under the guidance of a physician to minimize the possibility of adverse events.