There are gingivectomy and gingivoplasty methods to repair bad gums, which are mainly applied to gingival hyperplastic lesions or lesions occurring in the membrane gingival union, etc. The surgical methods are as follows: 1. First, use epinephrine-containing articaine for block anesthesia and local infiltration anesthesia to reduce intraoperative bleeding. 2. Ask the patient to use chlorhexidine gargle to clean the mouth before surgery. 3. Make a mark after probing the periodontal pocket with a periodontal probe to determine the location of the incision. 4. Cut the surgical blade with the crown at an angle of 45℃ into the gingiva to reach the root surface to remove the necrotic or hyperplastic gingiva. 5. Scrape away the gingival The root surface will be trimmed and the gingiva will be shaped. 6. The wound will be rinsed with saline, the gingival papilla will be suspended and sutured, and a periodontal plug will be applied.