3-Dimensional (3D) reformation of computed tomography (CT) is more valuable in percep-tion of the extent of major fracture lines and resulting displacement of fragments in cases of severe facial injury and complex injury in axial skeleton. From Aug. 1988 to Mar. 1989 authors experienced 8 cases of 3D reformation in nasal bone fractures and compared their findings with those of plain radiography of CT. As compared to plain radiography of CT 3D reformation was diagnostically more useful in evaluation of extent of fracture degree of depression deviation and spatial relationship providing more accurate and rapid assimilation of above informations. But 3D was less useful in evaluation of detection of fractures especially those with multiple or shallow fracture lines.