Obesity, known as a "children's adult disease", has a significantly increased incidence in my country, especially in metropolitan areas, such as some cities in the north, where the proportion has exceeded 20%, seriously affecting the healthy growth of children. Obesity in children will delay the time when they start walking, and often cause genu valgum or genu valgum and flat feet due to calcium deficiency and overweight. Due to obesity, children's body's reaction and resistance to the outside world are reduced, making them prone to various infections, especially respiratory infections. Children who are obese for a long time will also develop hyperlipidemia, which will lead to a variety of childhood adult diseases such as arteriosclerosis, hypertension, coronary heart disease, fatty liver, and diabetes.