When sudden tinnitus or hearing loss occurs, many people’s first choice is to go to a quintuplegia for treatment. There are many factors that can cause tinnitus and hearing loss, and auditory neuroma is one of the common causes, but it is often overlooked in clinical practice. Auditory neuroma is one of the most common benign tumors in neurosurgery, mostly occurring in middle-aged people between the ages of 30 and 50. Auditory neuroma starts calmly and slowly, and early manifestations are mainly unilateral, persistent, and persistent tinnitus, and the treatment is not effective, and hearing loss in time. It is a symptom of irritation caused by tumor compression on the nerve, and it is difficult to distinguish it from common tinnitus. Therefore, many patients with auditory neuroma who go to ENT department in early stage cannot find out the cause and are considered to be suffering from general hearing loss or senile deafness. The patient, Zhang, had tinnitus in his right ear for no reason 7 years ago, but did not pay attention to it, and then his hearing gradually decreased. The MRI showed that: 1) a huge occupying lesion in the right pontocerebellar horn (right auditory nerve sheath tumor was considered more likely); 2) obstructive hydrocephalus. The diagnosis was: auditory neuroma. The patient was referred to neurosurgery for brain tumor treatment. After perfecting the preoperative examination, “right auditory neuroma resection” was performed under general anesthesia, and electrophysiological monitoring was applied during the operation, so that the facial nerve was fully protected. After the operation, the patient recovered well, and his hearing was slightly better than before the operation, and only mild facial palsy remained. At the follow-up examination 3 months later, the facial palsy had basically disappeared, the hearing in the right ear had initially improved, and the tinnitus had completely disappeared. Director Qu Yan of the Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, explained that the typical development sequence of symptoms of auditory nerve sheath tumor is as follows: 1. Headache, nausea, vomiting, blurred vision and other symptoms of increased intracranial pressure until the final stage of dysphagia, cerebellar crisis and respiratory arrest.