A child’s replacement teeth that are growing crooked can be improved by removing milk teeth and early orthodontics. It is very common for a child’s teeth to grow out of position during tooth replacement. If it is just the beginning of the replacement of teeth, the position of the child’s permanent teeth is not yet fixed, there is room for self-adjustment, parents pay attention to observe whether there is any stagnation of milk teeth can be. If there is a stagnant situation, it is recommended to go to the hospital in time for extraction, so as not to affect the growth of permanent teeth. If the tooth replacement has basically finished, and there is a situation where the teeth grow crooked, or there is a more serious situation such as insufficient space between the teeth and narrower arches, it is recommended that early orthodontic treatment be carried out to adjust the direction of growth of the teeth, so that the teeth can return to the correct position and leave appropriate space for the subsequent replacement of milk teeth. Parents are advised to take their children to consult a professional dentist for standardized adjustments under the doctor’s guidance.