Out of 75 patients who were admitted to our hospital because of abdminal trauma and were undergone the procedures such as ultrasonography and/or CT scan within 24 hours of abdominal trauma due to suspected abdminal organ injury. We analyzed the results of 38 patients who were confirmed of diagnosis by operation, follow -up CT scan or ultrasonogrpahy. 1. In the abdominal organ injury, solid organ injury consists of 8 cases of spleen laceration, 1 of splenci subcapsular hematoma, 7 of hepatic laceration, 7 of pancreas laceration, 3 of renal laceration, and 3 of subcapsular hematoma of kidney. 2. In addition, there were 7 bowel and/or mesenteric laceration , 2 diaphragmatic hernia, and 1 urethral rupture. 3. 2 cases of retroperitoneal hematoma and 1 case in which hemoperitoneum occurred without abdminal organ injury were confirmed by follow-up CT or ultrasonography. 4. In all of the 4 patients with multiple organ injury, pancreatic laceration was associated. 5. In abdmonial tra ma patients, ultrasonography or CT can be used to survey rapidly the entire abdomen for possible associated injury, and be of great help to clinicians in identifying the patients who need immediate surgery or in minimizing the incidence of unnecessary emergency abdminal exploration.