Tongue-licking dermatitis occurs in the dry and windy autumn and winter, and its onset is related to the lack of vitamins and the bad habit of licking and sucking the lips of babies. The lack of vitamins or trace elements in the baby’s body can lead to dryness of the lip mucosa, and the dry and windy autumn and winter can aggravate this dryness and discomfort, forcing the baby to lick; repeated licking and sucking of the lips can damage the barrier function of the local skin, leading to dehydration of the skin, further aggravating the dryness symptoms and leading to inflammatory reactions of the local skin. In mild cases, the skin around the lips is red and dry, with some skin peeling, and in severe cases, edema, erosion and crusting. Countermeasures: During the onset of the disease, it is advisable to eat a light diet, more vegetables and fruits, less meat, and appropriate multivitamin supplements. Secondly, to correct the bad habit of licking lips, you can prepare a chrysomycin eye ointment in the small pocket of the baby’s clothes and teach him not to lick with his tongue when he feels uncomfortable with dry lips, he can always pull out the chrysomycin eye ointment and apply a coating. The eye ointment is very moisturizing and can effectively relieve the dryness and discomfort of the mouth and lips. If the lesions are heavy, take your baby to the doctor in time. After each meal and after eating fruits, teach your child to wash the skin around the mouth with water in time to reduce the irritation of vegetable soup and juice on the skin, and pay attention to the moisturizing emollient that must be applied in time after washing to protect and restore the skin barrier function.