Abstract: To observe the expression of binaural hearing at high intensive click on the auditory brainstem responses (ABR) in cats，so as to explore the effects of cross—hearing produced by 95dB click on the checked ear and the interference produced by steady white noise(SWN) and the click on binaural ears.〔Method〕 Take the amplitude of ABR for detective index，to observe and to compare the change of amplitude of ABR evoked by 95dB click when contralateral ear was loaded by 75dB SWN between before and after the damage of the cochlea.〔Result〕⑴ we found the 75dB SWN can increase the amplitude of the wave pⅢ and wave pⅣ of ABR evoked by 95dB click obviously before the damage of the cochlea（p＜0.01＝.⑵after the cochlea was damaged the 75dB SWN had no effect on the amplitude of ABR evoked by 95dB click（p＞0.05）.⑶before the cochlea was damaged the amplitude of wave pⅣ of ABR evoked by 95dB click when contralateral ear was loaded by 75dB SWN less then after the cochlea was damaged the amplitude of wave pⅣ of ABR evoked by 95dB click （p＜0.05＝. 〔Conclusion〕The cross—hearing had an expression on the wave pⅢ and wave pⅣ of ABR and the binaural interference produced by the 95dB click with 75dB SWN only had expression on wave pⅣ of ABR when the intensity of click was at 95dB

Key words: binaural interference, cross-hearing, binaural hearing, auditory brainstem responses (ABR)