Inflammatory bowel disease (IBD) is a group of chronic nonspecific inflammatory diseases, including Crohn's disease (CD) and ulcerative colitis (UC), whose etiology and pathogenesis have not been elucidated. Its onset may be related to dietary habits, environment, genes, infection, intestinal flora, and immune disorders. IBD is developing into a global epidemic. The highest annual incidence of UC is 24.3 cases per 100,000 population-years in Europe, with 6.3 cases per 100,000 population-years in Asia. The highest annual incidence of CD is 12.7 per 100,000 population-years in Europe, with 5.0 cases per 100,000 population years in Asia (1). As the incidence increases, so does the chance of complications and poor outcomes (2).As the level of China's economic development, diet, and lifestyle have changed and the average life expectancy of the population has increased, the number of cases of IBD has increased yearly and is approaching numbers in Europe and North America (3). The incidence of IBD in China is increasing yearly, and an indeterminate or incomplete diagnosis is often common. Although the incidence of postoperative complications and in-hospital mortality of patients with IBD has significantly decreased in recent years, a retrospective analysis of the epidemiology and surgical management of IBD in China conducted in 2016 indicated that the frequency with which patients with CD were misdiagnosed with conditions such as appendicitis before surgery was as high as 50.8%. The rate of postoperative complications in both CD and UC