Childhood obesity is divided into three grades, 20-30% is mild obesity, 30-50% is moderate obesity, and more than 50% is severe obesity. The normal weight of preschool children aged 3 ~ 6 is about 15 ~ 20kg. In childhood obesity, the vast majority belong to simple obesity or benign obesity. This is due to overeating and reduced exercise, so that the remaining heat energy is converted into body fat. Some children have a family history of obesity, which shows that it is related to heredity; A few children are secondary obesity, which is mostly caused by various diseases, such as kidney disease and encephalitis sequela's disease. Therefore, parents should pay attention to controlling the diet of obese children. 1, control the daily calorie intake and appropriately reduce the staple food of three meals. The main reason for baby's obesity is that staple food and sugar are too high in calories. The process of controlling the baby's daily staple food should be a step-by-step process, and it is not possible to reduce the daily staple food like a storm, otherwise the child will be as difficult to cooperate as a sore throat. Experts suggest that 1/5~ 1/4 can be reduced on the original basis, and then gradually transition to 1/3. Because the child is in a period of rapid growth and development, it cannot be reduced to about 1/3 of the original staple food, so as not to affect the child's growth and development. 2. Choosing a beneficial snack is approaching, and snacks will attack on a large scale, which will cause great resistance to the baby's weight control. For babies who can't get rid of the habit of snacks, they should replace the high-calorie snacks such as sugar, soda, biscuits, potato chips and preserves with beneficial foods such as skim milk, Yakult, nuts, peanuts and fruit salad. Try to choose boiled water when you are thirsty, because boiled water is the healthiest and most economical water source for human body.

3. Eat less and eat early for dinner. Because the human body's ability to consume energy at night is declining, if there are too many calories in dinner, it is particularly easy to cause obesity in children. Dinner has fewer calories than breakfast and lunch. In addition, we should pay attention to: first, eat dinner early, and don't add meals at night; Second, drink soup before meals. It is suggested to eat some low-calorie foods before meals, such as fruits, vegetables or soup, and then arrange to eat staple foods, which will help prevent excessive intake of high-calorie and high-fat foods, adjust the diet structure and reduce calorie intake, and have practical effects on obesity intervention. 4. Adjusting the proportion of food types Adjusting the proportion of food types means "one less and two more". One is to reduce all kinds of high-fat and high-calorie foods, such as fried foods, cream cakes, desserts and soft drinks. Erduo refers to increasing foods rich in protein and fiber. High protein foods include beans, eggs, milk, fish and lean meat, while fiber-rich foods include fresh fruits and vegetables. The daily supply of fruits and vegetables needs to reach 400~500 grams, especially fresh vegetables.

5, more exercise, less fat For overweight babies, diet conditioning plus moderate exercise can speed up the pace of weight control. Aerobic exercise, such as walking, jogging, swimming, cycling, mountain climbing, etc. Can effectively consume excess calories in the baby. Because the fat baby's own weight and cardiopulmonary function are poor, the intensity and frequency of exercise should not be too high or too large. It is best for children to be accompanied by their parents when exercising, and the active participation of parents will help improve their persistence. Fat dolls may not master sports as well as ordinary children because of their low flexibility At this time, parents and teachers should not make fun of the baby, but should encourage and care for the baby. When children are exercising to lose weight, their daily activities can still be carried out as usual. Parents and teachers should not be too hasty, let alone force their children to do sports they don't want to do or shouldn't do, or set unrealistic "goals" for their children to lose weight.