Extramedullary plasmacytomas are localized plasma cell neoplasms that arise in tissues other than bone and bone marrow. Primary plasmacytomas of the female genital tract are extremely rare and present a substantial diagnostic challenge. We report a case of a 38-year-old woman who presented with an endocervical polypoid. Surgical removal of the polyp was carried out. The final pathological report revealed primary plasmacytoma of the uterine cervix. The diagnosis was further facilitated by the use of immunohistochemistry and clonal immunoglobulin heavy-chain gene rearrangement. We performed a simple hysterectomy by laparoscopy on the patient and kept a close follow-up. She has remained well for more than eight years. The clinical characteristics and histopathologic findings of plasmacytoma of the uterine cervix are discussed.