The primary goal of the surgical treatment of acetabular fractures is to reconstruct the anatomical structure of the articular surface of the acetabulum. The quality of the reduction is a determining factor in the longterm results. The complications of the pelvic and the acetabular surgery can be divided into three groups, including intraoperative, early postoperative period and late postoperative period. Intraoperative complications include neurovascular injuries, malreduction, foreign materials left in the intraarticular joint, and death. Early postoperative complications include deep vein thrombosis, pulmonary embolism, skin necrosis, infection, loss of reduction, arthritis and death. Late postoperative complications are heterotopic ossification, chondrolysis, avascular necrosis and posttraumatic arthrosis. In this article, possible complications of the surgical treatment of acetabular fractures were discussed.