In surgical reconstruction of the delayed zygomatic complex fractures, the loss of normal anatomic landmarks owing to the malunion of the fracture ends makes it difficult to determine the correct positions of displaced fragments and original zygoma contour.Development of CAD/CAM and following appeared 3-D model surgery and application of the individual designed guiding template greatly relieved surgeons of bewilderment in operating.However, precise deliver of surgical simulation plans is still not realized through the fabricated template, and the outcome of accurate reconstruction become unpredictable.Intra-operative navigation has brought an effective solution to this problem.