ObjectiveTo explore the clinical application value of auditory brainstem detection in sudden deafness.Methods50 cases of sudden deafness in our hospital from January to December in 2015 in our hospital were selected as the research object,and divided into two groups according to the time of onset of the disease,the onset time of the observation group 1 was less than or equal to 3 months,and the onset time of the observation group 2 was more than 3 months. At the same time,20 cases of normal ear underwent routine examination,and past history of no ear disease,pure tone audiometry in 25 dn were selected as the control group.All of them received auditory brainstem detection,and main wave extraction rate,inter peak latency and latency in the three groups were compared.ResultsThe extraction rate ofⅠwave,Ⅲwave andⅤwave in the observation group 1 and the observation group 2 was significantly lower than that in the control group,with significant difference(P＜0.05).The latencies ofⅢ wave andⅤ wave in the observation group 1 was significantly higher than that in the control group,with significant difference(P＜0.05).The latencies ofⅠ wave,Ⅲ wave andⅤwave in the observation group 2 was significantly higher than that in the control group,with significant difference (P＜0.05).There was no significant difference in the latencies of each wave between the observation group 1 and the observation group 2 (P＞0.05).There was no significant difference in the extraction rate,latency and inter peak latency of each wave between the observation group 1 and the observation group 2(P＞0.05).ConclusionThe specificity of auditory brainstem detection in sudden deafness is significant,which is worthy of clinical promotion.