A customized orthodontic archwire fabrication kit and a method of fabricating an orthodontic archwire using the same are disclosed. The orthodontic archwire fabrication kit according to the present disclosure comprises: a jig base formed by perforating the pairs of inner fastening holes and outer fastening holes corresponding to the positions of teeth on a dental setup model of a patient a jig comprising at one end a first head through which a first through hole is penetrated, at the other end a second head through which a second through hole is penetrated, and a body connecting the first head and the second head and having a wire ligation slot recessed on a portion of the top of the body a fixing screw corresponding to the dimensions of the first through hole and inner fastening hole and a fixture corresponding to the dimensions of the second through hole and outer fastening hole. By applying heat in a furnace after the nitinol wire is ligated to and fixed in the jigs wire ligation slot, a custom orthodontic archwire will be created.