1, food should be easy to digest and absorb, nutritious, to choose high protein food, protein is the basis of intellectual activity and brain memory, thinking has a close relationship, milk, soy milk, eggs, yogurt, meat, etc. are rich in protein food, but also choose more vitamin high food. Because vitamin A can enhance the body’s resistance and promote the development of the brain. Vitamin B can improve the body’s various metabolic functions, enhance appetite, vitamin D can help the absorption and utilization of calcium. 2, to eat more vegetables and fruits, less fat fat meat, vegetables and fruits contain vitamins and fiber, can keep the stool smooth, if children do not eat vegetables, you can chop the vegetables, made into vegetable meat buns, vegetable meat dumplings, vegetable puree, vegetable soup, educate children to develop the habit of eating vegetables. 3, to carbohydrates such as rice, pasta, steamed bread, porridge, powder as the main food, too much omnivorous food will affect the appetite, resulting in nutritional disorders. 4, the diet should be timed, generally morning, noon and evening each eat once, those who have the conditions can add a snack in the morning and afternoon, eat on time, can increase appetite.