Abdominal injuries are common in patients with pelvic or acetabular fracture. However intestinal entrapment or perforation caused by fragments of a pelvic or acetabular fracture is rare and to date there has been no report of this occurring in Korea so far. As it is difficult to diagnose intestinal entrapment caused by fragments of pelvic or acetabular fracture, the entrapment therefore results in intestinal perforation, sepsis, and a high mortality rate in the absence of early detection. We present a case of intestinal entrapment and perforation caused by fragments of acetabular fracture as well as a literature review.