Different causes of children’s abscessed gums lead to different treatments, which generally include root canal treatment, localized medication, periodontal treatment, and so on. Abscesses in children’s gums, i.e., abscesses caused by diseases such as apical periodontitis, gingivitis, periodontitis, etc., can be manifested as swollen gums, biting discomfort or pain. Different treatments are needed for different conditions. 1. When the pulp and periapical area of the tooth are infected by bacteria, it can lead to periapical inflammation. When purulent changes involve the subperiosteum or submucosa, swelling of the gums in the apical area can be seen. The abscess may subside after root canal treatment to control the infection. If the root of the affected tooth is not fully developed, apical induction plasty is required. If the lesion is large and involves neighboring teeth, extraction should be considered. 2. When children have gingival inflammation, such as eruptive gingivitis, the surface of the crown of the erupted tooth is partially covered by the gingiva, and food is easy to gather, causing inflammation, and pus can be seen in the gingival pockets in the case of suppurative infection. Symptoms can be improved or subside after rinsing with antibacterial and antiseptic medications such as hydrogen peroxide ro, iodized glycerin, and other medications. If necessary, part of the gums can be removed to make the tooth erupt. 3. For children with periodontitis, if oral hygiene is poor, periodontal abscess can occur. It is characterized by swelling of the gums and pus overflow when pressed gently. Periodontal treatment such as scaling and scraping can be used to remove local irritants such as plaque and tartar. If necessary, antibiotics (e.g., metronidazole tablets) can be used for adjunctive treatment. If a child has pus in the gums, there may be other reasons, and it is necessary to consult the dentist in time to avoid delaying the condition.