Missing teeth in children is still a common situation in China, and its main causes are trauma and caries. When children’s teeth are missing, the front teeth will affect the phonetic learning of school-age children, and the speech will be leaky and unclear; the missing back teeth will directly affect the chewing, and then affect the absorption of nutrients and increase the gastrointestinal burden, which will cause gastrointestinal diseases such as indigestion in the light cases over time, and affect the healthy development of children in the heavy cases. Due to the long-term loss of normal chewing stimulation of the missing tooth socket, the jaw bone lacks physiological functional stimulation, and the normal development of the jaw bone is affected, such as deflated mouth, small maxilla or mandible are generally caused by this situation. When one side of the teeth is missing for too long, the child’s diet is too dependent on the opposite side, often forming an asymmetry between the left and right side of the face shape. There are also some premature loss of milk teeth, so that the back teeth are shifted forward, forming a crowded permanent teeth and bite jaw disorder teeth alignment. Children’s missing teeth adaptation to pay attention to the protection of good teeth is vital, but the missing teeth should be timely to set on. It is very difficult for children to get teeth and wear them, but we should do our best for the future of our children. For children who are unable to have dentures, they should be checked regularly and replaced at the right time, and for children with removable teeth, they should be checked and replaced regularly as the child grows.