Baby corners of the mouth appear red piece of very dry symptoms, should promptly consult the doctor to identify the cause of the disease, may be the symptomatic manifestation of some diseases, such as orofacial herpes, eczema, allergies, Kawasaki disease, etc., the cause of the different treatments are different, mainly through the treatment of drugs. 1. Allergy: if the baby ate some food that may cause allergy, such as pineapple, mango, lychee, etc. can lead to redness at the corners of the mouth, accompanied by itching and other manifestations. Cetirizine and other drugs can be used under the guidance of a doctor to treat allergies. 2. Eczema: eczema can also cause redness, dryness, itching and other symptoms of the corners of the baby’s mouth, you can follow the doctor’s instructions for local topical Dinaid cream. At the same time, parents should avoid foods that may cause allergies in babies. In addition, some diseases such as herpes orofacialis and Kawasaki disease can also lead to redness around the baby’s mouth accompanied by herpes or cracks. It is recommended to consult a doctor in time, according to the baby’s signs and other clinical manifestations, comprehensive judgment, and timely treatment in accordance with medical advice.