This study was implemented in 250 patients suffering from rhabdomyolysis due to trauma at surgical ICU in Hai Phong Friendship Viet Tiep Hospital during 2 years from 2009 to 2011. The goal of this subject to assess the results of forced urinary treatment in the prevention of acute renal failure due to rhabdomyolysis in trauma. Prospective study method, interventions comparison, shows the following results. 250 patients with acute rhabdomyolysis due to trauma, there were 102 patients suffering from acute renal failure accounted for 40.8 percent and 148 patients without acute renal failaure accounted for 59.2 percent. Effects of forced urinary treatment: + The mild group (200mg Lasix/24h) urine output increased to 3,000-4,000 ml/24 hours, patients got better fast. + The moderate group (1000 mg Lasix/24), urine output increased to 2,000-2,500mI/24h. Although there was no difference of the urine output at the first hour between the mild group and moderate group, but there was 35 percent of patients in the moderate group having dialysis, however, the number of dialysis was less than acute renal failure with anuria. + The serious group (1000 mg Lasix/24 combined with dopamine 1-2 ug/kg/min) was also anuria, 100 percent of patients with dialysis.