Children will relapse after orthodontic treatment, due to the existence of individual differences, so the chances of relapse are different, depending on the person. 1. After orthodontic treatment, the doctor will let the child wear a retainer to help stabilize the newly done teeth, but the child may eat food for a long period of time during the growing process, resulting in the teeth grinding against each other more seriously, and misalignment of teeth may occur. 2. In addition, children’s jaws and teeth still have growth and development during the growing process, and new malocclusions may arise during the growth and development process, so children’s teeth may recur after orthodontic treatment. After orthodontic treatment, parents need to pay attention to maintain the hygiene of children’s mouth, do not eat too hard, too sweet, too cold and other aspects of the stimulating food, pay attention to diligent brushing, to maintain a clean and hygienic oral cavity localization.