Children are one of the most vulnerable groups, partly because of their incomplete character development and unstable behavior, and partly because of the many outdoor or play activities during childhood, their behavior cannot be fully controlled, and when an accident occurs the front teeth of the milk are in a more prominent part and are most vulnerable to injury. It is very difficult to deal with injuries to the baby teeth. Since most of the affected children fall under the age of 3, the injuries often result in the loss and embedding of the baby teeth, which have very short crowns at this time, unlike adults whose teeth can be fixed after they fall out. The loss of baby teeth makes the child’s diet impaired to varying degrees and directly affects the child’s appetite, which can cause health problems in the long run due to the supplementation of various nutrients. In addition, due to the premature loss of baby teeth, the development of permanent tooth embryo and the lack of effective stimulation, making the teeth appear late alliance; teeth due to delayed alliance and other teeth alliance crowded position to occur uneven teeth; upper front teeth damage is more serious, there will be “envelope sky”, the central facial depression and other problems.