The process of periodontitis treatment includes basic treatment, surgical treatment, tooth fixation and restoration, and follow-up maintenance. 1. Basic treatment: Periodontitis treatment requires cleaning the mouth, extracting teeth with poor prognosis and unfavorable restorations, followed by supragingival cleaning and subgingival scraping to remove plaque and tartar, and then inflammation control and occlusal adjustment. 2. Surgical treatment: If the above treatment cannot achieve the ideal result, it can be treated by gingivectomy, flap surgery, bone grafting and other surgical methods. 3. Tooth fixation and restoration: If some periodontitis patients have loose teeth, it is necessary to fix the loose teeth and restore the missing teeth in order to restore the chewing function. 4. Review and maintenance: Periodontitis patients need to be reviewed every six months to check the plaque control and other conditions. The emergence of periodontitis should be timely consultation, under the guidance of the doctor’s diagnosis, targeted treatment, daily attention should pay attention to oral hygiene, and develop good living habits.