From a dentistry point of view, the principle of formation is edema of the tongue pressing on the dental arch, or the dental arch pressing on the tongue surface, resulting in the shape of teeth on the tongue surface, which can also be called dentate tongue. Bad habits such as tongue biting and tongue licking can show this manifestation. There are many causes of dentate tongue: first, habitual tongue stretching action, some bad habits; second, sharp edge of the tooth tip, causing traumatic inflammatory edema of the tongue edge; third, systemic edema and cause edema of the tongue, under the stimulation of teeth appear dentate tongue; fourth, oral inflammation, there are many kinds of serious can cause edema and enlargement of the tongue; fifth, some systemic diseases, such as acromegaly, kyphosis, licking tongue. Fifth, some systemic diseases, such as acromegaly, Kettin’s disease, hypothyroidism, amyloidosis of the tongue, etc., can cause enlargement of the tongue and the formation of a dentate tongue. Chinese medicine has a special diagnosis method, and the specific Chinese medicine department should be consulted to treat the symptoms. From the point of view of dentistry, the general tooth mark tongue does not require special treatment, oral inflammation can be some symptomatic treatment to reduce the swelling of the tongue, such as correction of tongue biting, tongue licking, tongue spitting and other bad habits, as well as sharpening the sharp edge of the tooth, is generally these treatments.