Five cases from July, 2013 to February, 2014 were collected in Jinling hospital.They developed unexplained high fever, bloating, nausea, vomit, a high stoma output or diarrhea in the color of yellow-green with copious amounts of mucus leading to dehydration and tachycardia after short time of operation (2-4d).We got the etiology diagnosis from all the patients' gastric juice cultures which revealed MRSA.Vancocin cp had a dissatisfied effect,so FMT was supplied for treating MRSA.All the patients had a decreased intestinal flora species before FMT and the content of staphylococcus aureus almost reached half of total intestinal flora . Patients' gut bacteria after FMT gradually agree with the donors' reflected the alleviative symptoms.