Double rows of teeth in children are usually caused by permanent teeth that have already erupted and milk teeth that have not yet fallen out. Most of them need to lose their milk teeth and then observe the growth of permanent teeth, which can be improved by orthodontics if necessary. 1. Loss of milk teeth: If your child’s milk teeth are already loose, you can chew hard food to promote the loss of milk teeth. If the milk teeth are not loose, it is recommended to go to the hospital for extraction so that the permanent teeth can erupt normally. 2. Orthodontics: In some cases, even after the removal of milk teeth, it is difficult for the permanent teeth to return to their normal position. Therefore, it is necessary to pay attention to the observation after the extraction of milk teeth, and if necessary, it can be improved by wearing braces or other orthodontic methods. Parents are advised to observe their children’s teeth during the tooth replacement period and go to the hospital in time for treatment if there are any abnormalities.