Patients with grade 3 meningiomas are saved and can be treated surgically, and with radiation therapy after surgery, the general survival period can be about 5 to 10 years. Grade III meningioma has a higher degree of malignancy, and the meningioma can grow metastatically in the original site, and extracranial metastasis can also occur. The tumor shows infiltrative growth in all directions, causing the brain tissue to show gliosis. The survival period of meningioma depends on many factors, mainly related to the growth rate of the tumor and whether the tumor has metastasis. Grade III meningioma patients should actively cooperate with doctors for surgical treatment, and try to remove the skull and dura mater where metastasis occurs during surgery, and can cooperate with radiotherapy after surgery to prevent recurrence. Most patients can survive for about 5~10 years. It is recommended that patients with meningioma grade III should consult the doctor in time and be actively treated under the doctor’s guidance, so as to avoid delaying the condition.