The main reasons for the problem of high blood pressure in the elderly are considered to be related to aging, disease factors, heredity, dietary inattention, medication and sleep disorders, etc., which generally need to be controlled with regular antihypertensive drugs. 1. Ageing: For the elderly, due to ageing, blood vessels undergo degenerative changes, followed by sclerosis, and when the elasticity of blood vessels decreases, it is easy to produce the phenomenon of elevated systolic blood pressure. 2. Disease factors: the elderly due to chronic diseases, such as coronary heart disease, diabetes mellitus, hyperlipidemia, etc. will increase the risk of hypertension, in addition to the presence of renal diseases, such as adrenal disease or renal artery stenosis and other conditions, may lead to high blood pressure. 3. Heredity: If the elderly have hereditary or familial hypertension, high blood pressure usually occurs. 4. Dietary inattention: If the elderly often like to eat food with high salt content and high oil and fat food in their diet, they are prone to high blood pressure. 5. Drugs: Some elderly people who take painkillers for a long time to control the pain in the body are prone to high blood pressure. 6. Sleep disorders: Older people often suffer from combined sleep disorders, and long-term sleep disorders are likely to result in higher blood pressure. If the elderly continue to have high blood pressure is easy to induce cardiovascular and cerebrovascular diseases, need to regularly take antihypertensive drugs to control the treatment, such as nifedipine, candesartan, hydrochlorothiazide, etc., the specific use of medication need to comply with the doctor’s instructions.