The main treatment for meningioma is surgical resection. The purpose of surgical resection of meningioma is to relieve the pressure of meningioma on the surrounding brain tissue and nerve structures, to reduce the symptoms of focal pressure caused by the tumor and the symptoms and risk of increased intracranial pressure, and to obtain tumor tissue to further define the benignity and malignancy of the tumor through pathological diagnosis. Although surgical resection is the primary treatment for meningioma, many meningiomas are prone to recurrence after surgical resection. Meningioma recurrence is related to a number of factors, the most important of which is whether the tumor is clean and the nature of the tumor itself. The most thorough way to remove a meningioma is to remove the meningioma, as well as the dura mater and skull that it invades, but the risk of removing the dura mater and skull that the meningioma invades is sometimes too great for complete removal. This part of the meningioma itself may not be completely resected to ensure patient safety. Therefore, if there are residual meningioma lesions after surgery, or if the dura mater or skull invaded by the meningioma cannot be treated even if the meningioma is removed, it is necessary to be alert to the recurrence of meningioma and regular review is needed to detect the recurrence of meningioma as early as possible. Is it true that meningioma and the invading dura and cranial bone will not recur after the meningioma is removed? Grade II and grade III meningiomas are not benign meningiomas, and even if they are completely removed during surgery, these meningiomas are prone to recur after surgery due to their malignant biological behavior. If these types of meningiomas are not excised cleanly, they are even more likely to recur in the short term. Even benign meningiomas have the potential to recur after complete surgical removal of the meningioma. The chance of recurrence of benign meningioma varies, and the higher the index, the greater the chance of recurrence, as shown by the Ki67 index, which is routinely tested to reflect how fast or slow the cells proliferate. Moreover, according to the latest WHO pathological classification of meningiomas, meningiomas that were originally diagnosed as benign in pathomorphology but have TERT promoter mutations or CDKN2A/B pure deletions are also very prone to recurrence, and these subtypes have been directly classified as tertiary malignant meningiomas, which are also the types prone to recurrence after surgical resection It is also a type that is prone to recurrence after surgical resection. The chance of recurrence of meningioma is closely related to the extent of resection and the biological nature of the tumor. Patients with high-risk meningiomas that are prone to recurrence need regular reviews to detect and treat recurrent meningiomas early.