Treatment results of 403 patients with the closed abdominal trauma, complicated by the retroperitoneal bleeding, was performed. Two types of echographic and CT picture of the retroperitoneal bleeding were distinguished - with clot formation and of impregnation type. The diagnostic and treatment algorithm was suggested. The use of the least allowed the location of the bleeding source in 40% of the operated patients and in 100% of those, who were treated conservatively. The indications to the retroperitoneal surgical revision were set basing on the information about the bleeding source or the localization and spreading of the hematoma. The use of the algorithm was successful in 98.9-100% of cases.