The causes of hearing loss in children include: genetic factors, medication factors, noise damage, infections, trauma and so on. 1. Congenital cochlear hypoplasia, enlarged vestibular aqueduct due to genetic abnormality, cochlear hair cell or nerve abnormality due to the influence of viruses, bacteria and drugs during pregnancy and other congenital factors may lead to hearing loss of children. 2. Irregular use of ototoxic drugs such as gentamicin and streptomycin may also lead to hearing loss. 3. Prolonged exposure to noise may lead to persistent hearing damage. 4. Viral and bacterial infections such as otitis media may show hearing loss. 5. Ear trauma may show hearing loss in children. There may be other reasons for hearing loss, 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.