Emergency antihypertensive oral medications for hypertensive emergencies include metoprolol, captopril and nifedipine, which are required to lower the blood pressure smoothly and avoid falling too fast. 1. Metoprolol: it belongs to short-acting antihypertensive drugs, which can be used in hypertensive emergencies not accompanied by hypertension-related target organ damage, such as acute heart failure, acute stroke and so on. At this time, the clinic is based on dynamic monitoring of blood pressure. Adverse effects include bradycardia, fatigue, and chills in the extremities. Acute heart failure, sick sinus node syndrome, atrioventricular block patients are prohibited. 2. Captopril: Also indicated for hypertensive emergencies not associated with hypertension-related target organ damage. Adverse effects include irritating dry cough and angioedema. Without any contraindications to the use of ACEIs, such as severe renal insufficiency, renal artery stenosis, hyperkalemia, and pregnancy, it can be taken orally, but must be monitored to prevent sudden drops in blood pressure. 3. Nifedipine: belongs to calcium antagonist, rapid onset of antihypertensive effect, antihypertensive efficacy and magnitude is relatively strong, can be used as emergency antihypertensive drugs, try to use under the guidance of a doctor. Adverse reactions include increased heart rate, facial flushing, headache, lower extremity edema. It should not be taken by pregnant women or patients with low blood pressure. Hypertensive emergencies have a rapid onset, poor prognosis, and different clinical manifestations, with the common feature of a sharp rise in blood pressure, and the effect of lowering blood pressure through oral medication is not obvious or other uncomfortable symptoms appear, you should go to the hospital in time to avoid delaying treatment.