Abstract: Gliosarcoma (GS) is a rare type of primary malignant tumor of the central nervous system. Immunohistochemistry shows an interlacing appearance of nidus of glioblastoma and malignant fibrous histiocytoma. GS is characteristic of sud-den occurrence and rapid progression, with a higher incidence of extracranial metastases than neurogliocytoma. Surgery is the most effective treatment. GS is not sensitive to conventional radiotheraphy or chemothetapy. But both the above treat-ment are helpful for GS patients with extracranial metastases.