Abstract: Etiological detection and analysis was conducted on the samples collected from the patients and food makers during a suspected food poisoning events according to the national standard of food microbiological detection, and 1 strain of suspected pathogen was isolated from the anal swab of 1 patient and identified as ISalmonella blegdam/I by systematic biochemical reaction and serum test (serotype: O9，12：H：g，m，q).This is the first time to detect IS.blegdam/I from the patient of food borne disease in Changping, Beijing.