Emphysematous gastritis is a rare entity of infectious gastritis casused by gas forming organisms and only 32cases have been reported. CT is helpful in diagnosis in particularly in mild cases that there is only a smallamount of gas. Typical CT findings of emphysematous gastritis are gas bubbles within the irregular thickenedgastric wall and dilated stomach filled secretions, debris and largeamount of gas. We report a case that wasdiagnosed by CT and operation.