Objective To investigate and improve the level of diagnosis and treatment of primary ureteral carcinoma. Methods Retrospective analysis of clinical data of 30 cases of primary ureteral carcinoma was studied.The various kinds of preoperative diagnosis means of ultrasound,intravenous urogram (IVU),retrograde pyelography,cystoscopy and or ureteroscopy,spiral CT,MRU were performed to diagnose and evaluate and the prognosis of carcinoma was assessed.