Monitoring liver enzymes in the nonoperative treatment of liver trauma has value in the prognosis of the disease. The study carried on to assess the value of liver enzymes in the nonoperative treatment of closed liver trauma. Results: from January 2007 to December 2009, 292 patients with liver injury caused by abdominal trauma were treated at Viet Duc hospital in Hanoi, in which was including 214 male (73.3 percent), 78 females (26.7 percent), the average age of 30.5 + or - 13.6 (from 3 to 81 years old). The cause injury was 227 traffic accidents (77.7 percent), 35 working accidents (12 percent), 30 living accidents (10.3 percent). The time from accidents to admission averaged 13.9 + or - 26.7 hours (range from 30 minutes to 240 minutes). The diagnosis and assessing classification of AAST based on the abdominal computed tomographic (CT) scanner. Tests of SGOT at conservation group was 568 + or - 744.8 U/I, complication group was 730.6 + or - 907.5 U/l, surgical group was 731.6 + or - 616.4 U/I
test of SGOT at conservative group was 404.7 + or - 912.2 U/I, complication group was 352.6 + or - 749.8, surgical group was 468.6 + or - 426.5 U/I. Increased level of liver enzymes to prognosis possible complications with SGOT was 501.5 U/I and SGOT was 382.5 U/I. In treatment process, liver enzymes in conservation group were descending from the third day and being back to normal until his discharge. The liver enzymes increased depending on the time of complications and reduced only when complications are treated in the complication and surgical group.