Inflammatory bowel disease is broadly defined as inflammatory bowel disease of various causes, including various infectious and non-infectious intestinal inflammatory conditions. Narrowly, it refers to idiopathic inflammatory bowel disease, including ulcerative colitis, Crohn’s disease and undefined colitis. The current understanding of the etiology and pathogenesis of inflammatory bowel disease can be summarized as follows: environmental factors acting on genetically susceptible individuals, with the involvement of the intestinal flora (or specific microorganisms not yet defined), initiate the immune and non-immune systems of the intestine, ultimately leading to an immune response and an inflammatory process. Probably due to the continuous stimulation of antigens and disturbed immune regulation, this immune inflammatory response manifests itself as excessive hyperactivity and difficulty in self-limitation. As far as clinical observations are concerned, the patients have common personality traits: hypochondriacal, inexpressive. They are more vulnerable, etc. It may be caused by the disease or it may be related to the personality constitution and genetics of the disease. Therefore, in the treatment process, it is necessary to pay attention to the patient’s psychology and change the habits of life, which may be beneficial to the healing of the disease.