The 12-year-old child’s body is growing and developing, you can lose weight through diet structure change and more exercise, there is no such thing as the fastest way to lose weight. 1. Adjustment of dietary structure: 12-year-old children who weigh more than the standard, first of all, pay attention to proper nutrition, do not over-eat or diet, daily diet to ensure a sufficient amount of high-quality protein, sugar and fat intake should be moderate. Eating process should be chewed and swallowed slowly to help digestion and absorption, do not eat too much dinner, eat dinner time is not too late, in addition to pay attention to try not to eat late-night snacks. 2. Exercise: you can choose some aerobic exercise, such as running, swimming, etc., but also pay attention to exercise in moderation, excessive exercise can cause physical injury, the growth and development of adverse effects. Do not have pressure during the weight loss period, maintain a relaxed and happy mood will help weight loss success.