Most of the abscesses on children’s gums are due to dental problems. The resistance of children’s milk teeth to caries is especially low, and children’s tooth quality, including enamel and dentin, is relatively thin, so once caries occurs, the development is very rapid, and will soon spread to the tooth pulp to form pulpitis, and the further development of pulpitis will cause periapical inflammation. Once periapical periodontitis occurs, the inflammatory exudate of periapical periodontitis will destroy the alveolar bone, break through the bone cortex and mucous membrane, and form an abscess or fistula in the gum. Children’s pulpal nerves are less sensitive, and if the inflammation is chronic, the child may develop an abscess without a toothache, so don’t think it’s a fire, but it’s actually a dental problem. The right choice is to take your child to the hospital for examination and treatment, otherwise it may affect the permanent teeth below the milk teeth or cause osteomyelitis in the jaws.