An orthognathic system using a 3-dimensional hybrid image constructing program according to an embodiment of the present invention includes: a dental clinic server configured to prepare preliminary data for orthognathic surgery based on CT image data acquired by a CT imaging apparatus, transmit the preliminary data to an orthognathic device manufacturer server, perform virtual orthognathic surgery by inputting osteotomy data received from the orthognathic device manufacturer server into the 3-dimensional hybrid image constructing program, and transmit the result of the virtual orthognathic surgery to the orthognathic device manufacturer server； and an orthognathic device manufacturer server configured to merge CT data with gingival data, extract this to generate a jaw-bone 3-dimensional image file, cut the jaw bones within the program by using the generated jaw-bone 3-dimensional image file, and transmit the data to the dental clinic server.
