In general, some of the milder scars in children can disappear on their own and do not need to be removed in a special way. Due to the rapid metabolism and collagen growth rate of children, if the scars are heavy, it is usually better to repair them in the early stage of formation, so that the difficulty and length of repair will not increase gradually with the time of scar formation. The exact time required for repair depends on a variety of factors such as the condition of the scar, the repair method, and the child’s own condition, and there is no definitive answer. If the scar is mild and small, and if a regular and effective repair method is adopted in time, the time required is usually shorter and the repair result is better. If the scar is large or severely hyperplastic, the time required is usually longer and the result may be less effective. In addition, if the child is a keloid, the results are usually limited even with standard repair measures. The primary goal of scar repair is to address functional issues, followed by aesthetic issues. Therefore, if the scar has already affected the joints, neck and other body organs, medication should be used first to soften the scar and restore the function of the organs, and then laser treatment, cryotherapy, skin grafting and flap transfer should be used to remove the scar when the child becomes an adult. On the other hand, it is recommended to choose the right time and method to remove scars under the guidance of a professional doctor, and avoid unauthorized treatment or listening to prescriptions.