Meningiomas are derivatives that originate from the meninges and the interstitial meninges. They may arise from dural fibroblasts and soft meningeal cells, but most arise from arachnoid cells and can occur anywhere that contains an arachnoid component, such as intracerebroventricular meningiomas arising from the choroid plexus tissue within the brain. Meningiomas may be associated with certain internal environmental changes and genetic variants and are not caused by a single factor, including cranial trauma, radiation exposure, viral infections, and the combination of bilateral auditory neuromas. Meningioma is second only to glioma in incidence and accounts for about 20% of intracranial tumors. Most of them are benign and have a long course. They are most common in the parsagittal sinus of the cerebral hemisphere, followed by the cerebral convexity, pterygoid crest, saddle node, olfactory groove, posterior cranial fossa, apical rock, slope and intracerebral ventricle, etc. Occasionally, they are found outside the skull and are ectopic meningiomas. The pathology is divided into endothelial, fibrous, vascular, sand, mixed or migratory, malignant meningioma and meningeal sarcoma.