Abstract: Fecal microbiota transplantation (FMT) can correct intestinal dysbiosis, and it has been successfully used in the treatment of partial intestinal microflora related diseases in recent years, but still few researches are found on irritable bowel syndrome (IBS). In this article, the latest progresses of the relationship between gut microflora and IBS, clinical applications, possible mechanisms, safety and application prospects of FMT in IBS will be reviewed.