Abstract: Torsion of ovarian cyst pedicle in intrauterine twin pregnancies after embryo transfer is extremely rare, and there is no clinical guideline for reference. It needs to be diagnosed and treated as early as possible, and the clinical treatment is difficult. If the treatment is not timely, it may endanger the health and safety of the mother. Even if the diagnosis and treatment is successful, follow-up and health care during pregnancy still need to be conducted. This paper reviews one case of intrauterine twin pregnancies combined with torsion of ovarian cyst pedicle after embryo transfer in the gynecology and obstetrics department of the Characteristic Medical Center of the Chinese People′s Armed Police Forces. We hope that the awareness of gynecologists and obstetricians on the disease can be improved so as to better protect the reproductive health of women.

Key words: Fertilization in vitro；, Embryo transfer；, Pregnancy, twin；, Ovarian cysts；, Torsion