Lowering blood pressure is best achieved by returning to normal blood pressure values within one to three months. Patients who need to lower their blood pressure urgently choose the right medication half an hour is usually effective. The current guideline for the prevention and treatment of hypertension recommends a return to normal blood pressure levels within 1 to 3 months. If the blood pressure is lowered too quickly, some symptoms of hypotension may occur, such as weakness, dizziness, head swelling, and loss of appetite. Young people with good tolerance can control their blood pressure a little faster, while older people with a longer course of disease, comorbidities and poor tolerance need to control their blood pressure slower to avoid the symptoms of insufficient perfusion brought about by too fast blood pressure control. If there is a sudden rise in blood pressure, accompanied by nausea, vomiting, severe headache, palpitations, etc., emergency blood pressure lowering is needed. For some patients who need temporary emergency lowering of blood pressure, captopril or nifedipine can be used, and the blood pressure will begin to fall gradually in about half an hour. Drugs should be used under the guidance of a physician.