In this projects the investigators aim to re-establish a gut balance of intestinal microbiota through Standardized Intestinal Microbiota Transplantation for Ulcerative Colitis(UC) and Crohn's Disease(CD).Investigators have established a standardized isolation, store, and transport steps of fecal bacteria from donated fresh stool in the laboratory. Then the bacteria will be transplanted to mid-gut by nose-jejunum nutrition tube or capsules.Participants in this study will be assigned to receive Standardized Intestinal Microbiota Transplantation three times a week or traditional medicine and would be followed up for at least 1 year. The clinical symptoms, sign, blood tests, endoscopy and questionnaire will be used to assess the efficiency, durability and safety of Standardized Intestinal Microbiota Transplantation at the start and end of the projects. At last, investigators will use 16S-rDNA to estimate the change of intestinal microbiota.
