The patient’s tongue is cracked and should have guttate tongue, the cause of which is not very clear at present. Traditional Chinese medicine believes that it may be related to the dishonor of the tongue and the loss of nourishment of the tongue body caused by spleen deficiency and dampness invasion, heat and injury to yin and deficiency of qi and blood. According to the epidemiological findings, scholars at home and abroad believe that furrowed tongue is related to the following factors: 1. age, with age, the incidence of furrowed tongue grows slowly. 2. geographical environment, ethnicity, nutritional factors, may be related to some trace elements or vitamin deficiency. 3. and some systemic systemic diseases accompanying, such as psoriasis, dry syndrome, typhoid, syphilis, Down syndrome, etc. 4, Genetic, some high incidence family line exists. 5, may be related to the infection of viral infection, delayed metamorphosis and so on. Patients who have furrowed tongue can go to the stomatology department of a regular hospital for examination. If there are no obvious self-conscious symptoms, no special treatment is needed. If there is an infection, you can remove the food residue among the grooves when you rinse your mouth, and then apply topical iodine glycerin.