There are physiological reasons for children to lick their chins with their tongues, and there may also be pathological reasons. Pathological reasons include chapped skin, perioral dermatitis, and so on, and the causes should be identified and then treated with the right medication. 1. Physiological reasons may be because the child is relatively small, out of curiosity habitual tongue, this situation does not need to worry about, generally with the gradual increase in the age of the child will disappear. 2. Cracked skin is usually seen in dry skin, sebaceous gland secretion is reduced, this time you can apply moisturizing cream in the child’s chin or cod liver oil ointment to wipe the skin, can be restored. 3. Most of the causes of perioral dermatitis in children are related to the child’s repeated licking of the skin around the mouth and lips with the tongue, forming a vicious circle that can make the child lick the chin with the tongue. There may be other reasons for children to lick their chins with their tongues, so it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor. The above medication should be used in accordance with the doctor’s instructions.