Objective:To study the clinical features and management of Borderline OvarianTumors(BOT). Methods:39 cases with Borderline OvarianTumors were retrospectively analyzed. Results:One case(2.9%)died among 35 cases followed up to the end. Five cases(14.7%) relapsed including of 1 case of stage Ia,1 case of stage Ib,2 case of stage Ib and 1 case of stage Ⅲ. Three cases of recurrence were serious tumor,among that 1 case had micropapillary pattern associated with microinvasion. There were 3 recurrences among 6 patients treated by cystectomy,and 1 recurrence among 18 patients treated by oophorectomy. Conclusion:Surgery-pathology stage[FIGO,2000]is the main prognosis factor of BOT. Surgery is the key treatment method for BOT. In early stage disease,conservative surgery is indicated when fertility is desired by the patient. Oophorectomy.is better for conservative surgery. Radical surgery should be performed for advanced patients.