Disclosed is a method for constructing an orthopedic preview model and implant model. The method allows physicians to fine-tune the craniofacial model through a display device, while allowing patients to preview the effect of craniofacial cosmetic surgery, thereby significantly reducing disputes between doctors and patients, and can prepare the most suitable implant for the patient according to the models, thereby significantly enhancing the satisfaction of surgery. This method uses craniofacial scanning to obtain a craniofacial inner contour and a first craniofacial outer contour, then uses craniofacial scanning to obtain a second craniofacial outer contour, forms an overlap contour by overlapping the first craniofacial outer contour and the second craniofacial outer contour so as to build a craniofacial model and form an adjustment contour area between the craniofacial inner contour and the overlap contour, and then forms a cavity between the adjustment contour area and the craniofacial inner contour by stretching the adjustment contour area, and creates an adjusted craniofacial model according to the adjustment contour area, the craniofacial inner contour and the cavity and finally creates an implant model by capturing the three-dimensional data of the cavity.La présente invention concerne un procédé permettant de construire un modèle de prévisualisation orthopédique et un modèle dimplant. Ledit procédé permet à des médecins daffiner le modèle craniofacial par le biais dun dispositif daffichage, tout en permettant à des patients de prévisualiser leffet de la chirurgie esthétique craniofaciale, réduisant ainsi considérablement les litiges entre médecins et patients, et permet de préparer limplant le plus approprié pour le patient selon les modèles, ce qui permet daméliorer considérablement la satisfaction vis-à-vis de lintervention chirurgicale. Le procédé utilise le balayage craniofacial pour obtenir un contour craniofacial interne et un premier contour craniofac
