Swollen gums in children are mostly caused by apical abscesses of teeth, which usually have cavities or fillings on the tooth surface. A radiograph can be taken first to examine the apical part of the tooth to see if there is a low density image. If there is already a low density image, the decay or original filling can be removed, the nerve and infected material in the root canal can be removed, and the tooth can be fully enlarged and then fully flushed. Anti-inflammatory medications can then be placed to promote healing of the periapical lesion and the abscess at the root tip. Oral anti-inflammatory medications such as pediatric cephalosporin or pediatric erythromycin can be given as appropriate. In addition, swollen gums in children may also be caused by periodontal disease. If the child’s oral hygiene is particularly poor, the child may be given a scaling. However, if the swollen gums are not caused by root abscess or gum abscess, and the examination at the dentistry department is due to gum tumor or other swelling disease, surgical removal treatment can be performed.