The following treatment can be carried out when the gums are abscessed: 1. If deep periodontal pockets are formed around the roots of the teeth, subgingival scraping can be carried out to remove the calculus, granulation tissue and diseased bone attached to the root surface, and rinse thoroughly with 3% hydrogen peroxide solution; if the abscess is wider in scope and forms an alveolar abscess, the swollen part needs to be cut under local anesthesia for drainage. 2. discoloration, causing periapical inflammation, the pulp cavity can be ground open under local anesthesia for open pulp drainage, and the abscess will be gradually reduced after 2-3 days, the infected pulp will be removed, root canal preparation and disinfection will be performed, and root canal filling will be completed. If the fistula persists without healing, the sinus tract can be removed by scraping with a spatula.