Auditory evoked potentials are a common test in neurology, and they are used to detect lesions in any part of the entire auditory conduction pathway from the periphery to the brainstem. It can be used clinically in ENT for hearing loss, peripheral hearing loss, and also in the detection of lesions in the central part of the auditory conduction pathway to the brainstem, which can further determine the site of hearing loss or auditory disease lesions, and thus identify whether it is peripheral or central hypoacusis. In neurology, it can be used as an auxiliary test for multiple sclerosis and some specific auditory sensory disorders. In addition, there are local examinations in otolaryngology.