Abstract: Objective: To evaluate the effects of fertility-preserving surgery on the efficacy and fertility in patients with borderline ovarian tumor （BOT）. Methods：The clinical data of 51 patients with BOT receiving fertility-preserving treatments were retrospectively analyzed，including surgery，relapse，postoperative menstruation and pregnancy. The correlation was also analyzed between chemotherapy，comprehensive surgical staging and relapse. Results：Among the 51 patients，30 cases were S-BOT，7 cases accepted comprehensive surgical staging，10 cases accepted chemotherapy after surgery, and 13 patients relapsed. Of 8 patients who want pregnancy，3 patients succeeded. Conclusions：Fertility-preserving treatments are effective and feasible ways for patients with BOT. Adnexectomy may be the best way for fertility-preserving treatments. Chemotherapy and comprehensive surgical staging cannot reduce the relapse rate. Recurrence cases can choose fertility-preserving surgery again.

Key words: Ovarian neoplasms, Gynecologic surgical procedures, Pregn, Neoplasm recurrence, local, Borderline ovarian tumor