Baby’s rotten ear root, clinically possible causes are otitis externa, eczema and other causes. 1. Otitis externa: some nursing women like to lie down to breastfeed, which is easy to make the milk flow back into the baby’s ears and cause ear inflammation, if not handled in time, it may cause ear rot. 2. eczema: this situation is also more common in newborns, usually occurs in the body, when it spreads to the ear next to the ear, also easy to cause the newborn’s ear root appear erosion. Baby rotten ear root, there may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.