Ileocecal diverticulum refers to a single, or multiple, outwardly protruding cystic protrusions in the ileocecal intestinal wall. Ileocecal diverticula are categorized as paroxysmal diverticula and acquired diverticula. The cause of the disease is congenital weakness of the entire layer, where the base of the intestinal wall has a weak point that can be herniated out. Among them, ileocecal diverticulum refers to the diverticulum growing on the ileocecal colon, which usually has no typical symptoms, but may present with different degrees of limited abdominal pain after infection or perforation. Diverticula of the ileocecal region are adjacent to the appendix, and when inflammatory reaction occurs, it can spread to the appendix tissue, and the symptoms of metastatic abdominal pain similar to acute appendicitis can appear, so it is very easy to misdiagnose it as acute appendicitis before surgery. If not treated in time, peritonitis or even death may occur, so it is especially critical to diagnose and treat it actively.