Unilateral tinnitus does not rule out the possibility of a brain tumor. Unilateral tinnitus refers to abnormal hearing in one ear, and this tinnitus symptom may be objective or subjective. At present, the mechanism of tinnitus is not completely clear, but it cannot be ruled out that part of the population will have unilateral tinnitus because of brain tumor, such as brain tumor, such as acoustic neuroma, which will lead to tinnitus due to the damage of the auditory nerve. In fact, the causes of unilateral tinnitus are very diverse and complex, and brain tumor is only one of the causes. Moreover, some of the patients with unilateral tinnitus cannot find a clear cause even through scientific and standardized examination. Therefore, individuals should not rely solely on the symptoms of unilateral tinnitus to determine whether a brain tumor has occurred or not, and should consult a doctor in a timely manner.