Abstract: Objective: To analyze the clinical characteristics of ovarian torsion and the early diagnosis by transvaginal sonography in those women who received in vitro fertilization （ＩＶＦ） ｔｒeatment, so as to provide a practical reference for clinical work. Methods：Data of 14 cases of ovarian torsion who received IVF treatment were retrospectively analyzed, from Jan. 2012 to Dec. 2014 in our department. Results：In 14 cases, six cases were treated successfully by bimanual reduction; and 8 cases by laparoscopic surgery, including 4 cases by ipsilateral adnexectomy, 1 case of bilateral ovarian torsion by the ipsilateral adnexectomy and the contralateral ovary reset, and 3 cases by diseased ovary reset. There were 9 cases who had successful pregnancy including 8 live births and 1 early abortion. Conclusions：Combined with the clinical manifestations and signs of ovarian torsion, ultrasound examination is an effective method for the early diagnosis of ovarian torsion. The transvaginal bimanual reset after early diagnosis can effectively decrease the rate of surgery.

Key words: Ovarian diseases, Torsion abnormality, Fertilization in vitro, Laparoscopes, Case reports