Auditory neuromas are benign tumors originating from the Schwann cells of the vestibular nerve sheath of the internal auditory canal. If there is residual tumor in the surgery, recurrence cannot be ruled out. In order to preserve the function of the facial nerve during surgery, a small area of tumor may remain on the facial nerve, and the tumor usually does not grow, but it is also necessary to pay attention to regular review. For the residual tumor in the internal auditory canal, it may grow again, so the chance of recurrence is higher. Auditory neuroma will gradually compress the vestibular nerve cochlear nerve during slow growth, so it will lead to tinnitus vertigo, hearing loss and so on. Continued growth can lead to facial paralysis, facial numbness, and huge tumors can even be life-threatening. Three years after the surgery of acoustic neuroma, it is important to pay attention to regular review, if there is no obvious change in the residual tumor, it is considered that the chance of recurrence is small.