Abstract: Morphological studies of brain death due to blunt force are reported. Macroscopically, although superficial trauma of the body not prominent, but brain and spinal cord injuries may be very serious and cause primary brain death.Brain hernias, especially cerebellar tonsil hernia is most important and the forensic medical autopsy must be done carefully.This autopsy procedure not only determines the hernias but also the liquefactive necrosis of the hernial tissue, and cerebellar tonsil tissue may be fallen in to spinal space or mixed with spinal cord tissue.