Abstract: Pregnancy complicating ovarian neoplasm is rare and consequently， management strategies remain unclear due to the low incidence and paucity of reported data. It poses a special challenge to medical teams because ovarian neoplasm or its treatment may affect not only the pregnant women but directly involve the fetus. MRI plays an important role in differentiate diagnosis of ovarian tumors. Chemotherapy and laproscopic surgery in pregnancy also give an new treatment idea of ovarian neoplasms. In this article，we critically review available data and present the current diagnosis and treatment strategies for ovarian neoplasm during pregnancy.

Key words: Pregnancy, Ovarian neoplasms, Diagnosis, Ultrasonography, Magnetic resonance imaging, Drug therapy