The treatment of children’s lost teeth is related to a variety of reasons, there is no absolutely correct treatment, should be based on the actual situation to choose the appropriate treatment, it is recommended under the guidance of the doctor. 1. Children suffering from trauma resulting in the loss of milk teeth, generally need to be soaked in saline within two hours, disinfection and then under local anesthesia for dental reset, avoiding the affected side of the teeth for chewing, in 2-3 months, the root is stable, remove the arch splint. 2. If only the crown is fractured and part of the root remains, the pulp tissue needs to be removed, the root canal is filled with calcium hydroxide, the gums are closed, and the permanent teeth are erupted. If the milk teeth are lost prematurely, and the permanent teeth do not grow, it is necessary to wear a gap retainer to maintain the gap between the teeth to avoid difficulties in the eruption of the permanent teeth or the occurrence of malformations. Children’s normal growth and development will go through the period of tooth replacement, at this time of tooth loss, if there is no other discomfort, generally do not need special treatment, if there is more than blood flow, pain, need to go to the hospital as soon as possible for medical treatment, daily life should be a balanced diet, to avoid spicy and stimulating food, pay attention to rest, do not stay up all night, to ensure that enough sleep.