Objective: The zygomatic-orbital-maxillary complex fracture can cause secondary morphologic disfigurement and functional impairment, including ocular motility restriction, facial asymmetry, and so forth.Precise repositioning of the fractured bones, especially for the zygomatic-orbital-maxillary complex fractures, is key to ultimately restore the normal function and esthetics of the midface.Preoperative virtual planning and navigation have shown great potential for clinical applications.In this study,the effect of image-guided navigation on open reduction and orbital floor reconstruction was evaluated in the treatment of old zygomatic-orbito-maxillary complex fractures.