This prospective study aimed to evaluate the current status of ureteroscopic management of stones in the term of efficacy, safety, operative procedure and early postoperative complications.Ninty five ureteroscopic procedures were performed on 90 patients using pneumatic or laser lithotripsy, as well as both semirigid and flexible ureteroscopes. The overall success rate was 83.2% after 2nd session and was 94.7%, 76.9%, 70%, 50% and 66.7% in the lower, middle, upper ureter, renal pelvis and lower calyx respectively. The failure rate was 16.8% after 2nd session and was due to stone migration in 7 (7.4%) cases, access failure in 7 cases (7.4%) and equipment failure in 5 patients (5.3%). The results of flexible ureteroscopy showed that more experience must be conducted to urologists who had started learning to avoid complications especially equipment failure during the management of lower calyceal stones. The extravasation was significantly higher among flexible ureteroscopy group (50%), in cases with stone size 15.1-20 mm (33.3 %), in cases with lower calyceal (33.3%) and renal pelvic stones (16.75%).Ten cases with upper ureteric stone were successfully treated using semirigid URS with 2 cases stone migration. The operative time was significantly longer in cases using laser lithotripsy (89 min) as compared to pneumatic lithotripsy (77 min) but without any difference in success or complications.