Abstract: Objective: To analyze the diagnostic value of multi-slice CT in the diagnosis of trauma patients. Methods: A retrospective analysis was performed on 15 cases of emergency patients with critical disease after trauma, and the data of emergency plain and enhanced CT were retrospectively analyzed. Results: 15 cases of acute trauma patients, 8 cases of pelvic fractures(CT contrast-enhanced A. with arterial hemorrhage: 1 cases of left common iliac artery rupture, 5 cases with unilateral internal iliac artery branch bleeding, 2 cases of bilateral internal iliac artery branch bleeding; b. 2 cases with hepatic rupture and 3 cases with spleen rupture); small intestine and mesentery and multiple fracture 1 cases with rupture of liver and spleen; liver rupture in 1 cases; 4 cases of splenic rupture; left superior gluteal artery rupture in 1 cases. Enhanced CT can directly display the contrast extravasations and organ rupture injury changes. Conclusion: Multi slice spiral CT enhanced display with comparison of plain CT scan has important clinical application value of vascular rupture and organ hemorrhage location, the conditions of the hospital can be an active application.