Objectives: This study aimed to assess  various renal diseases using  IVU and US examinations Methods:This is a retrospective analytical which included 50 subjects referred for IVU and  was done in Fedail hospital, Soba University  hospital and Alnilain medical center  radiology departments, Data were collected in the period  between(16.7.2011) to (21.10.2011). Results:This study included 50 subjects referred for IVU, 76% male against 24% females, the most affected ages ranged between 21 to 40 years .There was 43(86%) of the patients with renal or ureteric stone according to U/S findings and 7(14%) with other problem, according to the renal function 26(52%) were normal secretion and 9(18%) showed nonfunctioning kidney up to 24 hrs. The most common affected site was kidney represented 76 %, then ureter which represented 24%. Conclusion: The study concluded that kidney with normal secretion in IVU which associated with stone not cause obstructive changes. The non-functioning kidney was strongly associated with severe hydronephrosis and showed delayed function at IVU films.