Objective:To evaluate the usefulness of multi-slice CT examination in the diagnosis of the abdominal wall hernias.Methods:The hernias of abdominal wall of 86 cases were all undergone multi-slice CT examination and proved by surgeons.Results:In 86 cases,there were the hernia of operative incision(n=19),the hernia of lineal alba(n=2),the ambilical hernia(n=8),the inguinal hernia(n=46),the hernia of medical opening of abdominal wall(n=6),the obturator hernia(n=3),three hernias in one case(n=2).Usually,the diameters of hernia of operative incision and medical opening of abdominal wall were larger than the else.In the same time,small bowel obstruction was found in 21 cases and one infection in the hernia of operative incision.Multi-slice could display the type,number,size,content and complication of the hernias.Conclusion:Multi-slice CT examination is helpful in the diagnosis of the abdominal wall hernias and plays an important role in hernia surgery.