In China’s large cities and affluent rural areas, the obesity rate among children and adolescents is increasing rapidly; in 2002, the detection rate of overweight and obesity among children aged 6 to 17 years in China was only 6.6 per cent, whereas it increased to 16.0 per cent in 2012. The obesity rate of urban children is significantly higher than that of rural areas, for example, the overweight and obesity rate of boys aged 6~11 years is as high as 27.4%. The impact of obesity on the health of children and adolescents is long-term and all-round. 1, obesity is a disease; 2, obesity is an important risk factor for cardiovascular and cerebrovascular diseases, diabetes, cancer and other major chronic diseases. A survey carried out in six major cities in China shows that 22.3% of overweight and obese children aged 10 to 13 years have high blood pressure and 3.6% have high blood sugar. Even in childhood does not develop, overweight and obesity will also give adults with chronic diseases buried hidden trouble. 3, obesity will also bring psychological problems to children and teenagers, the future life and development of adverse effects. Overweight and obesity will also make some of the children’s ability to deteriorate, such as the ability to exercise; and physical inactivity will also aggravate obesity, which will form a vicious circle. Myth: Many parents think that chicken, duck, fish, meat and even sea cucumbers, abalone, etc. are good, the child ate is certainly good for the body. But nutrition believes that “the body needs or lack of” is good, dietary balance is good. If there is a lack of a food or nutrient, by eating the “right” food or nutrient to make up for it, is just right. For example, milk, high quality protein content and calcium content, is a good nutritional food, daily consumption of about 300 ml is appropriate, but if excessive consumption, milk as water, it is not appropriate, and may even lead to elevated blood lipids, increase the loss of calcium and so on. Some children are fat, parents think that the child is fat, large weight base, need a large amount of meals, give a large amount, which will make the child more and more fat, the formation of a vicious circle.