If your baby does not pass the hearing screening test, you can wait until your baby is 42 days old to have a repeat test. 1. The baby hearing screening did not pass may be and hearing development is not fully mature, screening time baby’s ears have fetal feces, amniotic fluid or testing the influence of the environment has a relationship, the first hearing screening did not pass, generally can be in the baby after 42 days to go back to review once again, rescreening through the baby’s hearing is normal. 2. If the re-screening has not passed, a diagnostic test is needed, which can be done at the hospital after the baby is 3 months old. The baby’s hearing screening may be related to other reasons, it is recommended that after the re-screening if the baby still does not pass, must improve the relevant examination, identify the causes of the symptomatic treatment, and follow the doctor’s instructions.