Grade III meningiomas are meningiomas with a higher degree of malignancy, accounting for about 3% of the incidence rate of meningiomas. Meningiomas are clinically classified into three grades. Grade I meningiomas are benign lesions, accounting for about 70%~80% of the incidence of meningiomas, which can survive for a long time without affecting the life expectancy after resection; Grade II meningiomas are atypical meningiomas between benign and malignant, and Grade III meningiomas belong to malignant meningiomas or interstitial meningiomas, accounting for about 3% of the total number of meningiomas. Grade 3 meningiomas have a higher degree of malignancy, tend to recur at the original site after surgery, may have extracranial metastasis, and have a faster growth rate, making treatment more difficult. Currently, the treatment of grade 3 meningioma also encourages active surgery, and after surgery can be assisted by radiation therapy to reduce the recurrence rate of the tumor. For patients with grade 3 meningioma, it is recommended to consult the neurosurgery department of regular hospitals for treatment.