Elderly people who have a sudden rise in blood pressure at night can self-adjust, take medication, and should seek emergency medical attention for serious symptoms. 1. Self-adjustment: Suddenly elevated blood pressure in bed should pay attention to rest, keep lying down, do not be nervous and excited. In life should pay attention to control sodium, eat more fresh fruits and vegetables, appropriate exercise, keep a happy mood. 2. Taking drugs: already diagnosed with high blood pressure should regularly take antihypertensive drugs. Commonly used drugs include Chlorosartan, Captopril, Furosemide, Bisoprolol, Nifedipine, Lacidipine and so on. If the blood pressure is not well controlled, you should consider increasing the dose of the drug or combining it with other antihypertensive drugs. 3. Timely consultation: Sudden increase in blood pressure at night can take captopril, nifedipine, etc. for emergency blood pressure lowering, if accompanied by severe headache, chest tightness, chest pain, dyspnea, etc., should be an emergency consultation or call 120 ambulance. Drugs should be used under the guidance of a professional physician.