Ulcerative colitis is a common digestive system disease, the incidence is increasing in
recent years.It is reported that the occurrence and development of ulcerative colitis is
closely related to imbalance of intestinal flora .Moreover,intestinal mucosal immunity may be
related to intestinal flora. Fecal microbiota transplantation as a new technology to rebuild
intestinal flora has been used for several disease，but the efficacy of ulcerative colitis by
fecal microbiota transplantation needs to be further explored.