Many elderly hypertensive patients have unscientific dietary structure, in short, they get sick are eating out, which also gives other elderly friends to sound the alarm, the prevention of hypertension in the elderly should start from the diet, how should the diet is good? Older friends are to learn about it, for the prevention of disease and health are good. Reduce dietary fat: Supplement high-quality protein: Some studies have shown that even without reducing dietary sodium intake and weight loss, if dietary fat can be controlled at less than 25% of total calories and the ratio of polyunsaturated fatty acids to saturated fatty acids (P/S) is maintained at 1, the systolic and diastolic blood pressure can be reduced by 12% in men and 5% in women for 40 consecutive days. Increase high-quality protein: generally refers to animal and legume proteins. Current studies have shown that poor protein quality is associated with a high incidence of hypertensive stroke. Therefore, the dietary quality of protein should be increased. Our Nutrition Society recommends that each adult consume 14KG of cereals, 3KG of potatoes, 1KG of eggs, 1.5KG of meat and 500G of fish per month. Eat more vegetables and fruits: increasing vegetables or fruits can reduce SBP and DBP by 0.4KPA (3MMHG) and 0.13KPA (1MMHG) respectively, and reducing fat consumption can reduce SBP and DBP by 0.8KPA (6MMHG) respectively. KPA (6MMHG) and 0.4KPA (3MMHG), vegetarians have lower blood pressure, the hypotensive effect is the combined effect of fruits, vegetables, fiber and low fat and does not depend on the presence or absence of animal protein. Limit alcohol consumption: Generally small amounts of alcohol do not affect the incidence of hypertension, but large amounts of alcohol (meaning more than 2 to 4 servings of alcohol per day, each equivalent to 15 ML of alcohol or 300 ML of beer or 100 ML of wine or 25 ML of liquor) definitely contribute to the rise in blood pressure. Possible mechanisms of alcohol-induced hypertension are: ① increase the level of catecholamines and corticosteroids; ② affect the role of renin-angiotensin as well as vasopressin and aldosterone; ③ alcohol directly affects peripheral vascular tension, perhaps increasing the flow of calcium into the cells; ④ reduced insulin sensitivity; ⑤ increased magnesium excretion, which can promote vasospasm; ⑥ reduced pressure reflex action. Reducing fat, supplementing protein, eating more fruits and vegetables, and limiting alcohol consumption are still relatively easy to do. If elderly people can adhere to such good dietary habits, not only can they prevent hypertension in old age, but also have a preventive effect on many diseases of old age.