Low blood pressure in the elderly can be physiological, pathologic and drug-induced low blood pressure, food can not play a therapeutic role, but also need to treat the cause of the symptomatic treatment, such as taking pulse drink to raise blood pressure. 1. Physiological hypotension: it is mainly postural hypotension, which manifests itself as dizziness and reduced blood pressure when the body position is changed, at this time there is no need for special dietary management. 2. Pathological hypotension: in daily life, try to keep enough sleep, avoid excessive fatigue, eat all kinds of meat, fresh vegetables and fruits, all kinds of dairy products, and all kinds of seafood and so on. At the same time, you can follow the doctor’s advice to choose the drugs to raise the blood pressure. 3. Pharmacological hypotension: such as overdose of antihypertensive drugs, etc., if low blood pressure needs to consult the doctor in a timely manner, and follow the doctor’s instructions to adjust the dose or type of drugs. The selection of antihypertensive drugs and the change of drug dosage and type should be carried out under the guidance of professional doctors, do not use drugs blindly.