Judging from the classification of food and the nutrients it contains, some foods contain more certain nutrients, while others contain less, and no food can provide all the nutrients needed by the human body. For example, pork is rich in nutrients such as protein, vitamin A and vitamin D, but it contains almost no vitamin C; Fresh tomatoes are rich in vitamin C, but few in protein. Therefore, all kinds of food can be eaten reasonably to meet the needs of the human body. According to the dietary guidelines of China residents and the characteristics of China residents' dietary structure, the Nutrition Society of China designed a "balanced dietary pagoda" to show the balanced diet and guide people how to reasonably match various foods. The pagoda consists of five layers: the first layer is cereals, such as rice, steamed bread, potatoes, etc., which is the bottom layer of the pagoda, indicating that it should be the most eaten food every day. Eat 300 ~ 500 grams a day.

The second layer of vegetables and fruits should be eaten more every day, second only to the staple food in the diet. Eat 400 ~ 500g of vegetables and 0/00 ~ 200 g of fruit/kloc-every day.

The third layer consists of meat, eggs, poultry, fish and tofu, which should be eaten in moderation every day, but less than vegetables and fruits. Eat 50 grams of fish and shrimp, 50 ~ 100 grams of livestock meat and 25 ~ 50 grams of eggs every day.

The fourth floor is mainly dairy products. Eat100g milk and dairy products, 50g beans and bean products every day.

The fifth layer of pure energy food, namely oil, is the spire. You should eat the least amount every day. It is recommended not to exceed 25 grams per day.

Although the pagoda of balanced diet is based on the dietary principle of healthy people, it still has certain reference significance for the majority of patients with gastrointestinal diseases to match their own food according to this principle. Because the digestive absorption function of patients with gastrointestinal diseases is weakened, we should make some adjustments according to the situation, what is suitable for use and what is missing. It not only conforms to the reasonable dietary structure, but also supplements the deficiency of nutrition, and is also suitable for patients with gastrointestinal diseases.