Abstract: A welding jig for pedicle screw has a jig core, a head holder, and a pair of wing holders. The jig core includes a first mounting part inserted into a screw head of a pedicle screw, and a second mounting part to which a pair of wings to be welded to the screw head are attached to an outer surface thereof. The head holder covers the screw head and locks the screw head to the first mounting part, and the pair of wing holders covers the pair of wings and locks the pair of wings to the second mounting part by being coupled to each other. A welding apparatus for pedicle screw includes the welding jig for pedicle screw, a turntable, and a welding torch. The turntable has the jig locked thereto, and the welding torch applies power to the welding regions of the wings and the screw head.