Hypertensive patients whose blood pressure suddenly rises to 200mmHg need to follow the doctor’s instructions to choose drugs such as sodium nitroprusside, nitroglycerin, nicardipine, etc., as well as improve the relevant examination to exclude secondary hypertension. If the blood pressure suddenly rises to 200mmHg, it may be a hypertensive emergency, which requires timely intravenous infusion of antihypertensive drugs for treatment, such as sodium nitroprusside, nitroglycerin, nicardipine and so on. They can effectively dilate arterial and venous blood vessels and reduce the anterior and posterior load to achieve the effect of lowering blood pressure. During antihypertensive treatment, mean arterial pressure is reduced by no more than 25% of the pre-treatment level in the initial phase. Subsequently, the blood pressure is lowered to about 160/100 mmhg within 2-6 hours. If the patient is able to tolerate it and the situation is stable, it can be gradually reduced to the normal level in the following 24-48 hours. It is also necessary to improve renal function, renal artery ultrasound, radionuclide nephrography, dexamethasone suppression test, renal artery CT and nuclear magnetism, adrenocorticotropic hormone excitation test and other tests, so as to exclude secondary hypertension. When abnormal blood pressure is detected, it is necessary to seek medical treatment in time, so as not to delay the condition, which may lead to dangerous occurrence.