Meningiomas are very common, accounting for 15.31% of intracranial tumors, second only to gliomas. They are more common in adults, less common in older adults and children, and even less common in infants and young children. They are slightly more common in women than in men. Meningiomas originate from the arachnoid endothelium, and all intracranial areas rich in arachnoid granules and arachnoid villi are good sites for meningiomas. Meningiomas are more common in the parsagittal sinus, cerebral convexity, and pars falcae, followed by the pterygoid crest, saddle node, bromal gutter, pontocerebellar horn, and cerebellar curtain, etc. They are rare in the ventricles and can also be seen in the epidural space. There are also ectopic meningiomas, occasionally seen in the skull plate, frontal sinus, subscalp of nasal cavity or neck, which are from ectopic arachnoid tissue, not metastasis. In addition, meningiomas can coexist with gliomas and neurofibromas in the skull, or with hemangiomas. Meningioma is a derivative of meninges and meningeal gaps, accounting for 19.2% of intracranial tumors and ranking 2nd in incidence, with a female:male ratio of 2:1. The peak age of incidence is 45 years old and rare in children. The treatment of meningioma is based on surgical resection. In principle, complete resection and removal of the meninges and bones invaded by the tumor should be pursued for radical treatment. Meningioma is a tumor growing outside the parenchyma and most of them are benign. If it can be diagnosed early and operated before the tumor damages the surrounding brain tissue and important cranial nerves and blood vessels, it should be able to achieve total resection. However, there are some advanced tumors, especially deep meningioma, which are huge and adhere to the nerves, blood vessels, brainstem and lower thalamus, or the nerves and blood vessels are not easy to be separated, in this case, total resection should not be performed reluctantly, so as not to aggravate the damage to brain and cranial nerves and cause the risk of intraoperative hemorrhage, or even cause death or serious disability. It is advisable to limit the tumor to subtotal resection, reduce the volume of the tumor, supplemented by decompression surgery to reduce the pressure of the tumor on the brain, relieve the intracranial pressure and protect the vision. Or to be treated by staged surgery. For advanced tumors that cannot be removed surgically, after biopsy of tumor tissue, only decompressive surgery can be performed to prolong life. Malignant cases can be supplemented with radiotherapy.