炎症性肠病(IBD)包括溃疡性结肠炎(UC)和克罗恩病(CD),是一类病因和发病机制尚不十分清楚的肠道炎症性疾病。现在普遍认为IBD发病机制涉及遗传易感性、环境因素、免疫异常、肠道菌群改变等多个方面,其中肠道菌群与IBD的发生发展关系密切,为目前研究热点之一。研究显示,人体肠道 Inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn’s disease (CD), is a type of intestinal inflammatory disease whose etiology and pathogenesis are not well understood. It is now generally accepted that the pathogenesis of IBD involves many aspects, such as genetic susceptibility, environmental factors, immune abnormalities and intestinal microflora changes. Intestinal flora is closely related to the occurrence and development of IBD, which is one of the current research hotspots. Research shows that the human gut