Three-year-old baby ear pain crying may be caused by trauma, may also be the emergence of otitis media, external ear canal boils and other diseases. 1. Trauma, if the baby’s ear is stimulated by external forces, it may lead to soft tissue damage in the baby’s ear, and therefore ear pain and crying symptoms will occur. 2. otitis media, some babies with otitis media due to inflammation of the ear stimulation, inflammatory secretion oozing, may lead to increased ear pressure, so there will be ear pain crying symptoms. 3. boils on the external auditory canal, if there is a boil on the external auditory canal, the boil compresses the skin of the ear canal, which may lead to earache and crying symptoms. There may also be other causes of earache and crying in three-year-old babies, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.