Emphysematous Cystitis is an uncommon disease in which bacteria produce gas in the bladder wall and surrounding tissues. It is associated with diabetes mellitus, bladder outlet obstruction, chronic urinary tract infection and neurologic bladder dysfunction. The most common bacteria causing emphysematous cystitis are the gas forming bacteria such as E.coli, Enterobacter and klebsiella species. The early diagnosis of emphysematous cystitis is important to improve prognosis and reduced mortalites. Patients should be started an appropriate antimicrobial agent and correction of underlying causes. We report a case of emphysematous cystitis treated successfully with administration of appropriate antibiotics and bladder drainage.