Abstract: Objective To explore the clinical pathology of ovarian dysgerminoma. Methods Review the whole medical history and pathological section material. Results There were 50 cases acquired followed-up survey.The follow-up survey rate was 96%,11 patient died.Among them 4 cases were tumor companied with pregnance,6 cases were stage Ⅲ and Ⅳ,including 2 cases which mixed with embryonic cancer component.1 case had tumor emboli at intravenus.and 7 women which during child-bearing age have bearn their children after treatment. Conclusion The right、rational treatment provided the basal guaranty of elevated survival rate and bearing.The prognosis of single dysgerminoma is good,but the prognosis of tumor with pregnance is the worst.