Aim:To investigate the effectiveness of laparoscopic endometriosis surgery on ovarian reserve and ovarian blood flow index. Material and Method: Twenty-six patients were evaluated prospectively whom had laparoscopic surgery due to endometrioma in third care education and research hospital. Before and after surgical procedure all patients FSH, LH and E2 levels were measured in their 3rd menstrual period day. Periodically cysts and ovarian volume as well as ovarian artery resistive index measured by using transvaginal Doppler sonography. Results:Twenty-six patients' mean age was 25, 6 +/- 4, 5 (20-36 years). When the compared to changes of preoperative and postoperative values of hormonal parameters FSH (p:0,455) and LH (p:0,672) were insignificant and E2 (p:0,024) was significant respectively. While ovarian volume was decreasing significantly (p:0,001), Ovarian Artery RI parameter was not changed (p:0,587). Discussion:Our study was showed that while laparoscopic surgical treatment of ovarian endometriomas significantly decrease ovarian volume, but hormonal parameters and ovarian blood flow were not affected.