Diabetic patients can often lead to dystrophic lesions in a variety of organs, and diabetic gingivitis and periodontitis can occur in the oral cavity. The gums are dark red, swollen, bleeding or flaking easily, and even periodontal abscesses occur, and they often recur; tartar can form rapidly in a short period of time, and periodontal pockets are formed quickly because the periodontal tissue is damaged by the deposition of calculus. This makes food debris easily embedded in the periodontal pockets, which is conducive to microbial growth and aggravates the destruction of periodontal tissues; due to the fear of gum bleeding when brushing, the quality of brushing decreases, and teeth can quickly appear loose, weak, elongated feeling and a series of other symptoms, and some patients even have the loss of the whole mouth teeth in the early stage. In addition, diabetic patients are less effective in periodontal treatment due to their decreased immunity.