One hundred diarrheal specimens were collected from Dar-salam and Jabel awlia camps for IDPs during the period from November 2008 to April 2009. The specimens were transported in transport media and inoculated into a variety of selective media, the bacteria were identified later using API 20E, biochemical tests and slide agglutination test as a serotyping method. The results showed that Escherichia coli represent 72%, Shigella species represented 8%, Shigella sonnei alone represented 5% of them and was sensitive to Tetracycline_, Gentamicin andCiprofloxacin while the rest was Shigella dysentraie which was sensitiveto Ciprofloxacin, Tetracycline, Gentamicin and Cotrimoxazol. Salmonella paratyphi C represent only 1% and was sensitive to Chloramphenicol, Gentamicin and Ciprofloxacin, Yersinia enterocolitica also have 1% infection rate and was sensitive to Ciprofloxacin, Tetracycline, Gentamicin and Chloramphenicol, while Campylobacter species composed 4% and was sensitive to Erythromycin, Ciprofloxacin and tetracycline.