Brainstem Auditory Evoked Potentials (BEEPS) is a test in which the auditory nerve conduction pathway is stimulated by sound transmitted through headphones, and potential changes are recorded. Brainstem auditory evoked potentials are an important adjunct to check for abnormalities in the auditory conduction pathway, and abnormalities in the auditory evoked potentials are often indicative of abnormalities in the conduction pathway. If the wave interval is prolonged, it often suggests that there are abnormalities in the auditory conduction pathway of the brainstem, and there may be conduction block, which indirectly suggests that there may be lesions in the brainstem, such as multiple sclerosis, brainstem encephalitis, and other lesions affecting the auditory conduction pathway of the brainstem, and it has a certain diagnostic value for this kind of lesions. If the brainstem auditory evoked potentials are abnormal, further magnetic resonance imaging (MRI) of the skull and other ancillary tests, such as lumbar puncture, should be performed. Brainstem auditory evoked potentials are an important adjunctive test for the detection of brainstem lesions, but some false-positive results may occur. Therefore, if the result is slightly abnormal, it does not mean that the actual lesion exists, and should be judged in conjunction with the clinical condition.