Bleeding gums are usually caused by gingivitis or periodontitis, and the treatments include supragingival cleaning, subgingival scraping, etc., as follows. 1. Gingival cleaning: remove plaque and tartar on the gingiva with cleaning instruments, and polish the tooth surface to prevent plaque and tartar redeposition, the vast majority of chronic gingivitis can be cured, and periodontitis needs to go through the gingival cleaning and then do subgingival scraping and other treatments. 2. Subgingival scraping: using a fine subgingival scraper to scrape away the tartar and plaque on the root surface located in the periodontal pockets, while scraping away the diseased bone, and root leveling, can effectively alleviate the symptoms of periodontitis. Bleeding gums may have other causes, it is recommended to go to the hospital in time, early targeted treatment.