There are many bacteria in people’s mouths, and healthy people have a defense system in their mouths to defend themselves against various bacteria. Diabetic patients, on the other hand, have a much higher risk of oral diseases due to the long-term metabolic disorders, lowered body resistance, and the high sugar environment of saliva, which is more likely to breed bacteria. Oral diseases make some diabetic patients lose their teeth prematurely, which affects both aesthetics and quality of life. In addition, some oral diseases are also very dangerous, such as infections that occur in the soft tissues of the jaw and face, which have a rapid onset and rapid expansion of inflammation, and can even cause death if not treated in time. At the same time, when there is inflammation in the mouth, blood sugar is often elevated and difficult to control, which will certainly aggravate the diabetes. Therefore, diabetic patients need to strengthen oral care.