Abstract: In recent years, with the gradual improvement of people's understanding of intestinal flora, exploring common complications after renal transplantation from the perspective of intestinal flora has become a research hotspot. Studies have demonstrated that the composition of the intestinal flora in renal transplant recipients has significant differences before and after surgery, and this difference is closely related to the occurrence and development of many complications after renal transplantation such as infection, rejection, diarrhea and so on, which could affect the prognosis of the recipients. This article reviewed the research progress on intestinal flora and renal transplantation in order to provide new treatment ideas and strategies for renal transplant recipients.