Babies scratching their ears and cheeks may be caused by eczema of the external auditory canal, otitis media and cerumen impaction. 1. Eczema of the external auditory canal: it is a kind of polymorphic rash that occurs in the external auditory canal and its surrounding skin, which can lead to the appearance of erythema, papules and blisters on the skin of the external auditory canal area, which can be accompanied by itching, so babies will scratch their ears to relieve the itching and other discomforts. 2. otitis media: babies often like to lie down to drink milk or bathe accidentally injected water into the ear, can lead to inflammation in the middle ear area, resulting in otitis media. It can lead to localized redness, swelling, pain, running water and other discomforts, and it can also lead to babies scratching with their hands to relieve it. 3. Cerumen blockage: cerumen is commonly known as earwax, if the baby inside the earwax is more, resulting in blockage of the external ear canal, which can lead to ear pain, itching, hearing loss and other discomfort symptoms, due to the baby will not be able to express, but also may appear to scratch the ear to relieve. So when the baby appeared to scratch the phenomenon, need to go to the hospital in time to find out the specific cause of the disease for reasonable treatment.