The amniotic fluid in the external ear canal is too much during the neonatal period, and the fetal residue will be retained, which will make the afferent, stimulating and efferent response signals of the otoacoustic articulation disappear, while the child sleeps or is irritable, which will also easily lead to the hearing screening failure. If a newborn does not pass the first screening, he or she can be retested within one month. The retest must be done in a quiet environment and when the child is in a good mood and not irritable. If the child still does not pass the screening within three months, both ear canals should be reexamined. If the initial screening test does not pass, a brainstem evoked potential test should be performed to determine if there is damage to the ear nerve that is causing the hearing failure. A genetic test for deafness should also be done to see if the child carries the gene and if there are any risk factors. If the hearing nerve is damaged, a cochlear implant will be needed, usually within one year of age, and this will not affect the child’s speech function. If the hearing damage occurs at this time, the child will not be able to hear and will not be able to speak, so a cochlear implant should be given as soon as possible.