Cracked tongues are usually grooved tongues, and the quicker and better way to treat them is to maintain oral hygiene on a daily basis, which usually leads to a quick return to health without special treatment. Grooved tongue is mainly characterized by a deep groove and multiple irregular secondary grooves on the back of the tongue. Its cause is still not clear, and it may be related to age, heredity and other factors. Usually there are no obvious conscious symptoms, so it can be left untreated; if the food embedded in the bottom of the groove is not cleaned carefully, it may lead to bad breath, pain, and some bacterial infections, etc., it is recommended to use chlorhexidine or a certain proportion of sodium bicarbonate to rinse the mouth. When brushing teeth, the tip of the tongue can be pressed against the tongue surface of the lower front teeth, which can fully expose the grooves, and then cleaned with a toothbrush. It is recommended to go to the stomatology department of the regular hospital for a clear diagnosis, correctly recognize and understand the disease, do not panic. Do not panic. Treat the disease as early as possible.