First, ensure reasonable nutrition and provide a balanced diet that meets nutritional requirements. Huangdi Neijing puts forward the dietary principle of "five grains for nourishment, five livestock for benefit, five fruits for help and five vegetables for filling", which is consistent with the theory of modern nutrition. China Residents' Balanced Dietary Pagoda and China Residents' Dietary Guide tell us that under the premise of food diversification, the daily diet should be based on cereals, and the proportion of food in pagodas is the highest, ranking first (bottom-up). It mainly provides energy and provides more than half of protein. At the same time, we should pay attention to the combination of thickness and fineness in catering, because eating flour and rice does not eat coarse grains and loses nutrients, and keep in mind the truth that "the valley is prosperous and the valley is dead"; The second floor of the pagoda consists of vegetables and fruits. It is suggested to eat 400g-500g of fresh vegetables and 0/00g-200g of fresh fruits/kloc every day to provide the contents of minerals, vitamins and dietary fiber in food, and pay attention to choosing various dark-colored vegetables, especially dark-green vegetables, which cannot be substituted for each other, because the nutritional concentration of fruits is not as good as that of vegetables in general, but the palatability and sugar content of fruits are poor. The third floor of the pagoda is fish, shrimp, poultry, livestock and eggs. It is suggested that the daily intake of livestock and poultry meat is 50g-100g, that of fish and shrimp is 50g, and that of eggs is 25g-50g. Pay attention to fish food, because fish is high-quality protein and its fat content is relatively low. The fourth floor of the pagoda is made of milk and dairy products, beans and bean products. It is best to take milk and dairy products100g every day to supplement the calcium deficiency in the diet. 50g of beans and bean products can provide rich vitamin B 1 and trace elements such as iron and zinc, and keep in mind the old adage that you can eat without meat for a day, but not without beans for a day, and green vegetables and tofu can keep you safe. The fifth floor of the pagoda is oil, and the daily intake of vegetable oil should not exceed 25 grams, and the daily salt should be controlled below 6 grams.

Second, according to the theory of nutritional balance, scientifically match food and distribute it to three meals a day in proportion. In order to change the diet structure of animal protein, seafood, fat, less vegetables and less staple food in real life, we should scientifically match foods according to the theory of nutritional balance, emphasizing that balance is health, and the varieties selected in daily diet should reach five categories and more than 18 kinds, including more than three kinds of food, including rice, flour and miscellaneous grains, and more than three kinds of animal foods, including meat, eggs, fish and poultry. Including roots, stems, leaves, flowers, fruits, mushrooms and algae, more than two kinds of soybeans and their products, including tofu, bean curd skin and yuba, two kinds of edible vegetable oils, two kinds of fruits including nuts, and the energy supply of grain accounts for 55%-65% of the total energy supply in the whole day, and protein accounts for/kloc-0%-1.