Objective To report thresholds and latencies of air and bone conduction clicks-induced auditory brainstem responses in normal infants and to evaluate their values in clinical application. Methods Bone conduction click auditory brainstem responses (BC-ABR) and air conduction click auditory brainstem responses (AC-ABR) were tested in 20 nor-mal-hearing infants (group A:<6 months, group B:≥6months). Data were analyzed with the SPSS 13.0 software. Results Waves of BC-ABRs and AC-ABRs were similar. The mean BC-ABR threshold was 7.50±4.24 dB nHL (95th percentile:15 dB nHL) and the mean wave V latency was 7.45 ± 0.35 ms. There was no significant difference in threshold or latency be-tween the left and right ears, or between males and females. The wave V latencies were 7.48 ± 0.37 ms and 7.42 ± 0.34 ms, and the BC-ABR thresholds were 8.00±4.70 dB nHL and 7.00±3.77 dB nHL for groups A and B, respectively. The AC-ABR/BC-ABR threshold difference was 9.75 ± 4.44 dB and 9.25 ± 2.94 dB for groups A and B, respectively (P>0.05). AC-ABR thresholds were higher than BC-ABR thresholds (9.50±3.72 dB, 95th percentile:15 dB). Conclusion BC-ABR is a valuable and effective tool in newborn hearing screening,assessment and identification of hearing loss.%目的：研究正常婴儿短声骨导听性脑干反应（bone conduction click auditory brainstem responeses,BC-ABR）的阈值、潜伏期及其与气导听性脑干反应（air conduction click auditory brainstem responeses,AC-ABR）的关系，为BC-ABR在婴儿听力评估中的应用提供参考依据。方法将20例听力正常婴儿按月龄分为两组：A组婴儿<6月，共10例20耳；B组婴儿≥6月，共10例20耳。分别进行短声AC、BC-ABR测试，对测试结果进行统计分析。结果①BC-ABR波形与AC-ABR波形相似，BC-ABR波V潜伏期为7.45±0.35ms，反应阈为7.50±4.24dB nHL，反应阈的第95百分位数为15.00dB nHL。②不同性别、不同耳别间BC-ABR波V阈值和潜伏期差异均无统计学意义（P>0.05）。③A组、B组BC-ABR波V潜伏期分别为7.48±0.37ms和7.42±0.34ms,差异无统计学意义（P>0.05）；波V阈值分别为8.00±4.70dB nHL和7.00±3.77dB nHL，差异无统计学意义（P>0.05）；AC、BC-ABR阈值的差值分别为9.75±4.44dB nHL和9.25±2.94dB nHL，差异无统计学意义（P=0.68）。④AC-ABR波V阈值为17.00±2.95dB nHL，明显高于BC-ABR波V阈值，差异有统计学意义（P<0.05）；AC-ABR与BC-ABR阈值的差值为9.50±3.72dB nHL，第95百分位数为15.00dB nHL。结论BC-ABR波形特点与AC-ABR极为相似；婴儿BC-ABR阈值的正常值可采用统一的参考标准；本研究为婴儿听力的早期评估和干预提供了可靠依据。
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