Obese children’s body accumulation of excessive fat will erode the pituitary gland, so that the posterior lobe of the pituitary gland fatty, hinder gonadotropin and growth hormone generation, thus seriously endangering the growth and development of young children, reproductive development and sexual maturity. Obese boys are prone to prostate development atrophy, testicular atrophy, the formation of small testicles, small penis, so that children’s genital development in childhood, to the adult period is bound to appear sexual dysfunction, severe punishment can not be reproductive; obese girls tend to menstrual menarche occurs in advance, adult prone to ovulation disorders, egg dysplasia, estrogen and progesterone significantly reduced or even disappeared, thus leading to infertility. In addition, obesity makes the child high incidence of blood circulation system diseases, diabetes and other endocrine system diseases, more severe punishment is obesity kill the child’s nature, seriously endanger the mental health, affect the intellectual development and thinking and hands-on ability. Therefore, the grandparents and parents who suffer from children must regularly test the weight of children and take active weight loss measures to control the harm of obesity to a minimum. Children’s obesity treatment principle (1) children’s obesity treatment should not use the method children’s obesity treatment is different from adult obesity, children have growth and development characteristics, any treatment measures should not prevent children’s normal growth and development, so in the adult period can use the surgery to remove fat, drug weight loss, hunger therapy, fasting, etc., in the children’s period is not appropriate to use, because these methods are likely to children’s growth. In addition, short-term rapid weight loss in childhood is also not advocated. Children grow from normal weight to obesity, generally after several months or years, in this process, the body organs, such as heart, lungs, kidneys, etc., has gradually adapted to the high weight of the situation. Short-term rapid weight loss (for example, losing several kilograms a week) is generally the loss of body water (body fluids), the rapid loss of body fluids, so that the heart, lungs and kidneys and other organs have difficulty in adapting, easy to circulatory system problems and lead to kidney function damage, and may even increase the risk of cardiovascular disease in adulthood. On the other hand, weight loss, which is mainly based on the loss of body water, is difficult to sustain, and once the weight loss measures are stopped, the weight will quickly return to its original level. The great ups and downs of body weight are not only harmful to health, but also easy to make obese children lose confidence in treating obesity. (2) weight loss effect evaluation and weight loss speed In the process of weight loss treatment for obese children, many parents are anxious to know how much weight their children can lose in how long, hoping to see rapid results after taking weight loss measures. It is inappropriate to measure the weight loss effect by the absolute weight loss of children. The child’s height is growing, and the weight loss effect is achieved if the weight can be maintained without increasing or slowly increasing. The specific evaluation method can be calculated by using the number of kilograms over the obesity standard. For example, a boy with a height of 110 cm, weighing 27 kg exceeds the obesity standard by 4.6 kg; after losing weight for six months, his height is 114 cm and his weight is still 27 kg, exceeding the obesity standard by 3 kg. Although the absolute weight of the child did not change, the relative weight decreased by 1.6 kg, indicating that the weight loss was effective. Generally speaking, the rate of weight loss in children is controlled at a relative weight reduction of 0.5-1 kg per month is more appropriate. (3) Children’s obesity treatment method At present, domestic and foreign recognized suitable for children’s obesity treatment method is, including behavior correction, diet adjustment and exercise, including the comprehensive treatment program. Children’s obesity formation is the result of many factors, in the treatment process if only use a single method of treatment, the effect is very unsatisfactory, some experts at home and abroad used to use simple diet control or simple exercise training to treat obese children, the results are not satisfactory. Bad diet, exercise behavior and living habits are the main causes of obesity, want to completely eradicate obesity, must start from these causes of obesity, to establish a healthy life pattern, only then, can maintain a normal weight.