Children’s gums abscess with bag is mostly periodontal abscess or alveolar abscess caused by the general can not be eliminated, more need to be based on the cause of the periodontal or root canal treatment in order to cure. 1. Periodontal abscess: poor oral care can lead to food impaction or dental caries, which in turn causes inflammation of periodontal tissues by bacterial infection; if not treated in time, the symptoms will aggravate the emergence of periodontal abscess, and must be treated with periodontal therapy, i.e., incision and drainage of the abscess and flushing treatment. For several days after incision and drainage, patients should use saline or 0.12% chlorhexidine solution for gargling. 2. Alveolar abscess: Periapical abscess is caused by untreated pulpitis that spreads to the periapical tissues, which leads to abscesses in the periapical tissues at the root tips. Root canal treatment is required to clean out the necrotic pulp tissue and inflammatory substances in the root canal in order to effectively treat the above symptoms. Children with abscessed gums are advised to consult a doctor for a clear diagnosis and follow the doctor’s instructions to avoid delays in treatment.