Inflammatory bowel disease includes ulcerative colitis and Crohn′s disease,for which intestinal fibrosis is one of the common late complications and for which there is still no better non-surgical treatment.Intestinal flora is closely associated with the development of IBD and its role has been demonstrated in a variety of organ fibrosis.In this paper,we reviewed the available research progress on intestinal flora in IBD-related intestinal fibrosis to provide a refer-ence for clarifying the interaction between intestinal flora and intestinal fibrosis in IBD patients.