2h-8h after severe thoraco-abdominal injury, in trauma group, a function disturbance of small intestine transit could be observed ( P < 0.01 ). Intestinal permeability and positive rate of portal vein blood culture increased obviously ( P < 0.01 ); 严重胸腹伤后2h~8h,与正常对照组相比,创伤组存在小肠传输功能障碍(P<0.01),小肠通透性增加(P<0.01),门静脉血细菌培养阳性率明显升高(P<0.01);