Small children tooth decay rotten recommended to go to the hospital for repair, serious can be extracted. 1. Repair: Because children usually brush their teeth not seriously enough can easily lead to dental bacteria remain on the surface of the teeth, and often eat sweets, so the teeth are more carious. It is recommended to go to the hospital to remove the decayed tissues and fill them with dental filling materials. If the nerve of the tooth is injured when removing the decayed tooth, root canal treatment is needed before filling. 2. Extraction: If the decayed tooth is too big to be repaired and has no retention value, then consider extracting the decayed tooth. After extraction, the tooth will be reviewed regularly and restored when the time is right. If the milk teeth are excluded and the permanent teeth have not yet come in, a gap retainer is needed. 3. Children should develop good oral hygiene habits, do morning and evening brushing and rinsing, as well as regular dental checkups.