Ventricular meningioma 2.5*1.9cm in the fourth ventricle is considered a relatively large tumor tissue. In the case of ventricular meningioma in the fourth ventricle, due to the relatively small local space, if the volume of the ventricular meningioma reaches the size of 2.5*1.9cm, it is relatively large in comparison. It often produces compression on brainstem and cerebellar tissues, which not only produces edema of local brain tissues or causes intracranial pressure increase, but also abnormal symptoms such as unsteady walking, which will seriously affect the normal life of patients. The volume of 2.5*1.9cm of ventricular meningioma in the fourth ventricle indicates that the scope of the lesion is relatively large, and some patients may even have brain hernia, which requires timely medical examination and treatment.