This study was done to determine the effectiveness of in situ extracorporeal shock wave lithotripsy (ESWL) in upper ureteric calculi in terms of stone clearance, peroperative & postoperative complications and also to determine some criteria for selection of patients for this procedure. From July, 2003 to July 2004, a total of 67 patients, with excreting kidneys and having stone size less than 2 cm were treated by in situ ESWL using Lithostar plus Lithotriptor. The patient group comprised of 52 men and 15 women, age ranged from 14 years to 65 years. Of the total 67 patients selected for study 44 patients were included in group I, having stone size ?1.5 and visible distal flow of contrast on IVU & 23 patients were included in Group II with stone size>1.5 cm to 2 cm and contrast seen only upto stone. Four (04) patients from Group I and three (03) patients from group II were dropped out during the follow up period so that data of 40 patients in group I and 20 patients in group II were analyzed finally. Number of shock wave was given in 1 to 3 sessions. Finally 95% of group I and 85% of group II achieved complete clearance of calculi at the end of 3 sessions. In situ ESWL is a good option for the treatment of upper ureteric calculi.