The article presents forensic information about morphological changes in persons who died from acute general cold injury in the air. The macro- and microscopic signs of cold injury have been clarified, supplemented and systematized. A quantitative assessment of the frequency of occurrence (detectability) of diagnostically significant signs, most often used in expert practice, is given. In its entirety, the established complex of characteristic and pathognomonic signs of general acute deep hypothermia allows reliable differential diagnosis of the cause of death during the forensic medical examination of a corpse.