Abstract: Objective: To investigate the security and excellence of peritoneoscopy in treatment of benign ovarian tumor. Methods: One hundred and sixty-one patients with benign ovarian tumor were divided into two groups. Seventy-nine patients undergoing peritoneoscopy were compared with eighty-two patients receiving laparotomy. Results: The operative time, the amounts of bleeding, the mean time of bowel function recover, the postoperative morbidity rate and the mean postoperative hospital stay were significantly less than those of laparotomy group (P<0.001). No one used analgesic drug in peritoneoscopy group. All of the peritoneoscopy group were pulled out of urinary catheter and got out of beds six hours postoperatively. But all of the laparotomy group were used analgesic drugs, were pulled out of urinary catheter and got out of beds twenty-four hours postoperatively. Conclusions: Peritoneoscopy in treatment of benign ovarian tumor is worthy of being advocated owing to its micro-incision and benefits such as shorter operative time, less blood loss, quick recovered and shorter hospital stay.