With the increase of age, the function of taste buds degradation, resulting in the middle-aged and elderly people to add more and more salt when cooking, like to eat more and more salty meals. As a young person in the filial piety to elders, can only comply with the preferences of elders. Only to share the scientific knowledge of disease prevention that they have with their elders is true filial piety. Let the elderly: the Chinese Nutrition Society recommends that the daily salt intake of healthy adults should not exceed 6 g, hypertensive patients no more than 3 g. Limiting sodium intake is an effective measure to minimize the cost of preventing and treating high blood pressure, and its widespread promotion should not be delayed. Dietary sodium/potassium ratio is positively correlated with blood pressure levels, and an appropriate increase in potassium intake without increasing sodium intake (thus lowering the sodium/potassium ratio) can also have an antihypertensive effect. The potassium-rich low-sodium salt currently available on the market is designed and produced for this purpose. Accompany the elderly to develop a scientific and rational diet. Measures to avoid high salt intake include: ① no more than 2g of salt per person per meal (i.e., a standard 2g salt spoon); no more than 6g of salt per person per day (a flat cap of an ordinary beer bottle cap after removing the rubber cushion is equivalent to 6g); ② try to avoid eating high-salt foods and condiments, such as squash, pickles, yellow sauce, pickles, pickled meat, hot sauce, etc.; ③ use the flavor of the vegetables themselves to flavor, for example, will be peppers, tomatoes, onions, mushrooms, etc. and the flavor of the vegetables themselves to taste, for example, will be peppers, onions, mushrooms, etc. and the flavor of the vegetables themselves to flavor, For example, green pepper, tomato, onion, mushroom, etc. and the taste of light food cooked together, can play a coordinating role; ④ use of vinegar, lemon juice, apple juice, tomato juice and other acidic sauces to add flavor to the food; ⑤ try not to eat salted vegetables or tofu curd for breakfast, a piece of 4 cm square curd contains 5 g of salt; ⑥ non-diabetic patients with high blood pressure, you can use sugar and vinegar seasoning to reduce the need for salty; ⑦ the use of potassium-rich low-sodium salt instead of common salt, but the use of potassium-rich low-sodium salt, but the use of potassium-rich low-sodium salt, but the use of potassium-rich low-sodium salt instead of common salt. sodium salt instead of common table salt, but it should be used with caution for patients with renal insufficiency to prevent elevation of blood potassium.