The first trick: to clear away heat and relieve summer heat, we should continue to eat more foods that can prevent heatstroke and cool down, stop sweating and rehydrate, and also stimulate appetite, such as mung bean soup and lotus seed porridge. In summer, most children's appetite will drop. Only a variety of diets can supplement the nutritional deficiency caused by the hot summer climate and decreased appetite. Therefore, meat should be appropriately increased after autumn, such as duck, loach, fish, lean meat and seafood. It can not only clear away the summer heat, but also replenish it. The second measure: children who eat more crude fiber are prone to diarrhea. Eating chewy foods rich in cellulose, such as celery and corn, is not only conducive to the full digestion of food and the complete absorption of nutrients, but also can maintain intestinal moisture and effectively prevent diarrhea and constipation. The third measure: eat less spicy food and moisten the lungs. After beginning of autumn, in addition to drinking boiled water, vegetable soup and fruit juice, you can also eat some foods that moisten the lungs and produce fluid, such as lotus root, lily, red dates, tremella, yam and water chestnut. Children who are usually influenced by their parents and eat spicy food should adjust their recipes, because too much spicy taste will hurt their lungs, so after beginning of autumn, they should eat less spicy products such as onions and ginger. Increasing acidity can enhance the function of the liver, so eat more sour fruits and vegetables, such as oranges, lemons, kiwis and tomatoes.