Objective To investigate the hearing impairment in children with language developmental delay,and provide reference for clinical evaluation of language delayed children. Methods 539 children with language developmental delay were included,and all were tested for pediatric audiometer (PA5).If the results of PA5 were abnormal,then there was a need to do otoacoustic emission(OAE),Acoustic impedance audiometer and auditory brainstem response(ABR). Result Hearing impairment accounted for a certain proportion in children with language developmental delay;Pediatric Audiometer found 25 abnormal cases,and indicated positive rate of hearing screening was 4.46%;Only 15 of the 25 children were then tested by ABR,5 children were diagnosed as hearing impairment,which accounted for 20% of positive screening;2 cases were middle ear effusion and 3 were moderate hearing loss. Conclusions Children with language delay should do hearing test as a routine,even for children who had already passed neonatal hearing screening.In that case the influence of hearing impairment on child language development earlier can be found and maken the language delayed children receive earlier diagnosis and intervention.