[Research progress on the relationship between intestinal flora and colorectal cancer].

In recent years, the incidence of colorectal cancer has been increasing. Various evidences show that the change of intestinal flora is related with the progress of colorectal cancer. Intestinal opportunistic pathogens can promote the development of colorectal cancer, while probiotics can inhibit colorectal cancer. Changes in intestinal flora affect chemotherapy, surgery and other treatments. At the same time, intestinal flora has potential application in the treatment and diagnosis of colorectal cancer. This article reviews the recent advances in the relationship between intestinal flora and colorectal cancer.