A swollen bag next to the tooth may be caused by periodontal abscess, chronic periapical periodontitis, gingival papillitis, gum tumors, etc. According to the specific situation, we will choose incision and drainage, root canal treatment, surgical treatment and other treatment methods. 1. Periodontal abscess: When periodontal abscess has fluctuating sensation, incision and drainage will be made in time, and systematic periodontal treatment such as supragingival cleaning and subgingival scraping will be carried out to remove calculus, so that periodontal pockets will be kept clean and recurrent abscesses will be avoided. 2. Chronic apical periodontitis: chronic apical periodontitis when the bag should be gingival fistula, the need for endodontic treatment of the tooth, generally wait for the root of the inflammation disappears, the gingival fistula will be gradually eliminated. 3. Gingival papillitis: swollen teeth next to a bag, may be tooth decay caused by food impaction, further leading to inflammation of the gingival papillae, first of all, rinse the gums on the medicine, and then fill the caries repair. 4. Gum tumors: benign and malignant tumors of the gums can cause a long bag next to the teeth, this situation needs to go to the hospital in time to surgically remove the long bag, and then do a pathological examination to clarify the diagnosis. There may be other reasons for the long bag next to the teeth, it is recommended to go to the hospital in time, after the cause of the disease is clear and active treatment, so as not to cause aggravation of the condition.