A “rapid blood pressure lowering” is a method of bringing down blood pressure in a short period of time. However, rapid blood pressure lowering is based on the smooth lowering of blood pressure to a safe range, not on the sudden lowering of blood pressure to normal. In a normal person or a patient with hypertension, the blood pressure may suddenly or significantly increase to more than 180/120 mmHg under certain triggers, and may be accompanied by progressive cardiac, cerebral, renal and other important target organ insufficiency. In this case, the blood pressure needs to be controlled within a certain range as soon as possible, but it cannot be suddenly lowered to normal, otherwise it will cause a sudden drop in the perfusion pressure of vital organs and lead to aggravation of the disease. 1. Timely lowering of blood pressure within the initial minutes to an hour: intravenous medication can be chosen, and the goal of blood pressure control is a reduction in mean arterial pressure of no more than 25% of the pre-treatment level. It is advisable to use drugs with fast onset of action, short duration of action and small adverse effects. Commonly used drugs such as sodium nitroprusside, nitroglycerin, uradil, etc. 2, the subsequent 2 to 6 hours to lower the blood pressure to a safer level: generally about 160/100mmHg, and maintain the patient’s self-perception of good physical condition, no new dizziness, headache, nausea, vomiting and other symptoms. Intravenous medication can be continued and the dose of antihypertensive drugs can be adjusted as appropriate. 3.24 hours~48 hours: Blood pressure gradually approaches or decreases to normal level, if there are palpitations, decreased urine output, head discomfort and other manifestations, the speed and magnitude of blood pressure lowering can be slowed down. It is recommended to start adding oral long-acting and smooth antihypertensive drugs, such as nifedipine controlled-release tablets, amlodipine, benazepril, fosinopril, coxsartan, etc., and start with small doses. 4.In the following 1-2 weeks: according to the blood pressure and the patient’s clinical performance, the long-acting and smooth antihypertensive drugs can be gradually increased to maintain the blood pressure in the normal range. Rapid blood pressure reduction should be based on the patient’s blood pressure and disease condition to bring blood pressure down to a safe range. Timely and controlled reduction of blood pressure can bring the patient into remission, improve prognosis, and improve quality of life as soon as possible. On this basis, the transition to long-term smooth blood pressure control.