Gum abscesses can be flushed with hydrogen peroxide. In acute attacks, gum abscesses should first be incised and drained, after which they can be flushed with hydrogen peroxide and saline alternately. The most common is apical abscess caused by inflammation of the root tip. For apical abscess, we must first deal with the tooth, open the pulp and drain the tooth, unblock the root canal, take a picture after the acute inflammation, and then perform root canal treatment to completely eliminate the infection of the gum abscess. The next common cause of gum abscesses is periodontal infection, and treatment of periodontal inflammation is required for periodontal infection. The usual treatment is a dental cleaning, followed by a radiograph and then the appropriate treatment depending on the periodontal lesion, which may be deep scaling or gum flap surgery, etc.