Children with supernumerary teeth during tooth replacement may be related to abnormal development of the organism or heredity. The presence of supernumerary teeth is recommended to be extracted in time to avoid malocclusion. Multiple teeth may come from the formation of too many tooth buds, or may be a split tooth germ, can occur in any part of the jawbone, but most often seen in the upper jaw between the two incisors, often single, but also can appear in pairs, the crown of the tooth is conical, the root is short. It may be related to organic variation or heredity, but it is rare to have multiple teeth in the general dentition. Multiple teeth can be erupted or blocked in the jawbone, which can be found by X-ray, and can cause malocclusion or dental caries, and it is recommended to go to the hospital in time to extract the multiple teeth, so as not to affect the position of the neighboring teeth.