12-year-old child if the phenomenon of obesity, weight loss can be carried out in the following ways: 1, to a balanced and reasonable diet, can not not eat, nutritional imbalance such as partiality, picky eaters are more likely to lead to obesity of the child, but to control the overall intake of the amount of food in the amount of food should be controlled to the amount of the previous oral 2/3 or 3/4 or so, and gradually carry out a small amount of food. 2, at the same time, be sure to strengthen the pediatric physical exercise The children should have 30-60 minutes of aerobic activity every day, and they can run or bounce in place and jump rope. 3, it is important to pay attention to the night within 2 hours before going to bed must be fasted, do not eat, but also to control the amount of intake of the dinner. To appropriately reduce the fat food intake, such as meat appropriate reduction can be. 4, if the child obesity is particularly obvious, if necessary, need to take the child to the hospital for glucose blood lipid testing, according to the results of the actual examination of the child to give oral medication.