Periodontitis cannot be cured by itself, and should be treated in time. According to the severity of periodontitis, basic treatment, periodontal surgical treatment, systemic treatment, and regular review will be chosen. 1. Basic treatment: Periodontitis is mainly caused by plaque and calculus accumulating in the gums for a long time, plaque and calculus can be removed from the gums through supragingival cleaning and subgingival scraping, and root planing can be done according to the situation. 2. Periodontal surgical treatment: If the periodontal inflammation is large, surgical treatment, such as periodontal flap surgery, bone grafting, root amputation, etc., can be taken after the basic treatment. 3. Systemic treatment: When periodontal abscess appears, you can take amoxicillin capsule or cefixime capsule orally, together with metronidazole or tinidazole. 4. Regular review: periodontitis patients in general should maintain good oral hygiene, regular review of oral hygiene, generally every three months to half a year is better, if the teeth have no retention value, as soon as possible to the tooth extraction. The appearance of periodontitis can not blindly use their own medication, timely to the hospital, under the advice of the doctor to choose the most reasonable treatment methods, in order to facilitate the recovery of inflammation.