Loose teeth in children may be due to impending tooth replacement, or inflammation or trauma causing looseness, replacement teeth need to be extracted, inflammation and trauma need to be root canal or other treatments. 1. Tooth replacement: Children’s tooth replacement period is around 6 to 12 years old, if the milk teeth are loose and the permanent teeth will erupt after examination, the milk teeth need to be extracted according to the time to promote the eruption of permanent teeth. 2. Inflammation: loose teeth in children may be caused by inflammation such as periapical periodontitis, localized loosening, root canal treatment is needed to eliminate the inflammation, the looseness will be significantly reduced. 3. Trauma: when the tooth is impacted by external forces may cause tooth shock or tooth fracture, tooth shock and apical, root in 1/3 fracture of the tooth, can be adjusted to fix the observation, hurry not to fracture the tooth connected with the outside world, need to remove the crown after root canal treatment. Children with loose teeth, it is recommended to go to the hospital in time for examination, targeted treatment, to avoid affecting oral health.