In children, bone age generally increases by one year with age, but usually there is a deviation between bone age and age. Is it better to have an older or younger bone age? It is generally believed that a younger bone age is better, because a younger bone age means that the epiphysis of a child closes later, which allows more room for development and growth, and may lead to a higher height in adulthood. If the bone age is two years older, then the deviation is a bit too big and needs to be intervened. Generally speaking, the methods of intervention are: first, weight control, to lose weight. Second, pay attention to balanced nutrition, try to let children eat less puffed food or fried food, so that children have balanced nutrition. Third, to encourage children to carry out appropriate exercise, pay attention to the gradual and scientific exercise.