If a child’s tooth is cracked, if it is a milk tooth, it can be extracted or temporarily observed; if it is a permanent tooth, root canal treatment or apical induced plasty, extraction and other treatment measures can be chosen according to the situation. 1. Cracked milk teeth: If the cracked tooth is a milk tooth, extract the milk tooth if there is pain, or temporarily observe the tooth if there is no pain, and wait for the milk tooth to replace itself. 2. Cracked permanent teeth: if the cracked tooth is a young permanent tooth, the apical foramen is not developed, the tooth needs to undergo apical induction molding; cracked tooth apical foramen development has been completed, the tooth needs to undergo root canal treatment, and then later on the crown restoration. If the cracked tooth reaches the root of the tooth, there is no significance of preservation, it is best to extract the permanent tooth for temporary dental restoration. Children with cracked teeth should go to the hospital in time to clarify the location of the tooth and the degree of cracking, and choose the best treatment plan.