Gingival scaling can be performed on diabetic patients after effective control of blood sugar levels. Gum scaling is one of the conventional treatment modalities in dentistry, which is mainly used for the treatment of periodontal diseases caused by dental calculus, tartar, etc.; its treatment method is to use special oral scaling instruments to scrape away the dental calculus attached to the surface of the teeth, and it can effectively remove inflammatory substances such as tartar or calculus from the deeper part of the gums in order to promote the restoration of the gingival tissues. However, gum scraping is a kind of traumatic treatment, and diabetes will lead to a decline in the body’s immunity, which will lead to bleeding and swelling of the gums after the gum scraping operation or even the symptoms of systemic bacteremia, so before gum scraping, the first thing to do is to control the blood glucose at a normal level, i.e., fasting glucose of about 6mmol/L, and after the internal physician consultation for gum scraping treatment.