When hearing is affected in the early stage, it is often difficult to be detected because the hearing on the opposite side is normal, and when the size of the tumor is larger, most of the hearing is already completely damaged and difficult to recover. When the size of tumor increases further, it will also compress the posterior cranial nerve and trigeminal nerve, causing difficulty in swallowing and abnormal facial sensation, and compress the cerebellum and brainstem, causing unstable walking and impaired limb movement, and even cause hydrocephalus, leading to headache and other symptoms. The main treatment for large audiological neuromas is surgery, but because there are many nerves in the area where the neuromas grow, surgery carries a certain risk of nerve damage. In most cases, even if the tumor is surgically removed, it is still difficult to restore the hearing function. Also, because the tumor is closely attached to the facial nerve, there is a risk of facial palsy due to facial nerve damage after surgery for many large auditory neuromas. Modern micro-neurosurgery techniques and the availability of neurophysiological monitoring techniques can help surgeons find and protect the facial nerve during the surgical removal of auditory neuromas, reducing the risk of post-surgical facial palsy. For large auditory neuromas in which hearing is no longer recoverable, the focus during surgical resection of the tumor is to protect the function of the facial nerve. The protection of facial nerve function during large auditory neuroma resection requires skillful neurosurgeons and electrophysiological monitoring to identify the facial nerve, and the combination of the two will help to improve the protection of facial nerve function.