Brainstem evoked potentials can be examined both on an inpatient and outpatient basis. Brainstem evoked potentials primarily reflect the functional status of the patient’s auditory, visual, and other conduction pathways. Diseases such as multiple sclerosis, encephalitis, and brainstem infarction should be considered if abnormalities are present. Generally, if the brainstem evoked potentials indicate abnormalities, it is necessary to improve the cranial magnetic resonance examination, lumbar spinal puncture examination and other tests for further diagnosis. Clinical doctors will choose whether or not to do brainstem evoked potential examination according to the patient’s condition. Brainstem evoked potential is a common clinical examination method, through which the abnormal state of the patient can be observed, which is conducive to the doctor’s diagnosis of the disease.