Background: Approximtely 10% of humans at risk of UTI at some time during their lives It must be note, UTIs are also the most common hospital –acquired infection, accounting for as many as 35% of nosocomial infection. Subject and Methods: The study was conducted in the Department of Biology, College of Education for Pure sciences, University of Diyala. The study included 50 patients from dialysis patients who are in Ibn–Sina Dialysis Center in Baquba Teaching Hospital, during the period from November/2015 to April/2016. Results: The results showed that dialysis patients have urinary tract infection with different bacterial infections. As well the result showed that the infection rate for female was 100% and male 93.75 %.The study revealed that 22% of patients were at the age group 31-50 years, 4.8% at the age group 10-30 years and 19.2% at the age group 51-70 years As well the result showed the patients who live in rurla areas are more infection (62%), while those who live in the urban was 33%.