Rare mullerian anomalies without any present classification were sometimes reported. A 30-year-old nulligravid woman was referred to our hospital with 2-year history of primary infertility. Laparoscopic examination revealed a relatively intact uterine fundus with both patent fallopian tubes. Hysteroscopic exam confirmed the presence of double vagina and cervix, as well as complete uterine septum with opening at the lower segment. Hysteroscopic septotomy was successfully performed through the right-sided cervix. A variant of complete septate uterus with double cervix that communicated at the isthmic portion could be successfully treated by hysteroscopic operation.