Abstract: Objective To investigate the clinicopathological characteristics, prognosis and the pregnancy condition after preserving fertility function surgery of borderline ovarian tumors with intraepithelial carcinoma (OIC). Methods Clinical data of 29 patients with OIC at Department of Gynecology, West China Second University Hospital, Sichuan University, between January 2005 and March 2014, were collected for retrospectively analysis with 6-93 months follow-up. The recurrence rate and pregnancy rate after preserving fertility function surgery were compared. Results OIC patients accounts for 4.0% (29/719) in borderline tumors patients, including fertility preserving function requirement 51.7% (15/29). All patients underwent surgery treatment, including conservative surgery 51.7% (15/29), radical surgery 48.3% (14/29). Adjuvant chemotherapy 27.6% (8/29). Pathological types: mucinous 69.0% (20/29), serous 13.8% (4/29), endometrioid 6.9% (2/29) and mixed 10.3% (3/29). FIGO stage: Ⅰa 75.9%(22/29), Ⅰb 17.2%(5/29), Ⅰc 6.9%(2/29). The average follow-up time was 49.6 months, the recurrence rate was 10.3% (3/29), the pregnancy rate was 66.7% (10/15). The recurrence rate of higher stage and intraoperative retaining ovaries was higher ( P=0.005, P=0.005); the pregnancy rate of younger patients was higher ( P=0.017). Conclusion OIC patients are young, diagnosed at an early stage. Pathological types are mainly mucinous. For patients with fertility requirements, the recurrence rate of ovarian tumor excision surgery is very high.