Objective To study the diagnosis and treatment of urinary tract endometriosis. Me- thods Retrospective review of 6 cases of urinary tract endometriosis was carried out. Results There were 2 cases of bladder and 4 cases of ureter endometriosis EMS involving the urinary tract had not been considered before operation.The diagnosis depended on biopsy.The treatment consisted of salpingo-oophorectomy,local excision of the lesion freeing of the ureter and end-to-end anastomosis. Conclusions Urinary tract endometriosis should be considered in premenopausal women presenting noncalculous low ureteric obstruction or cyclical symptoms of bladder.Removal of the lesion should be undertaken when there is evidence of endometriosis invading into the urinary tract.