When a child has a small meatball on the tooth bed, the following treatment measures can be taken separately: 1. If the mucosa covering the crown of the baby tooth is locally swollen before eruption and contains tissue fluid or blood to form an eruptive cyst and cause obstruction to tooth eruption, it can be incised under local anesthesia to remove some of the soft tissue and expose the crown. 2. 3. If chronic periapical inflammation develops in the milk tooth and the inflammatory material in the pulp cavity spreads around the root through the apical foramen, causing gingival swelling with a fistula, the pulp cavity needs to be ground open and the infected pulp removed. After strict disinfection, the fistula can be induced to close and the root canal treatment is finally completed.