Hemangiopericytoma is a soft tissue tumor which is derived from mesenchymal cells with differentiation of pericytes. It represents a limited proportion of tumors in head and neck and most commonly occurs in sinonasal cavities. A case of sinonasal hemangioperictyoma of 75years male patient admitted. He presented with symptoms of frequent episodes of epistaxis, foul smelling nasal discharge. A purple vascular lobulated mass filled in both nasal cavities. The tumor removed en-bloc by endoscopic operation. Post-operative histopathological and immunohistochemistry examinations confirmed sinonasal hemangiopericytoma. No recurrences seen both endoscopically and radiologically in 3year post-operative follow-up. Hemangiopericytoma is vascular tumor of uncommon variation, its biological behavior prediction is difficult based on histopathalogical examination alone. Immunohistochemistry is helpful to diagnose the tumor.