The utility model relates to a device for alloying components and regulating alloy on a refining and continuous casting wire feeder, in particular to a wire feeder guiding device for inhibiting alloy oxidation and preventing nitriding. The device comprises a liftable refractory sleeve (2) arranged at the lower end of an outlet of a conventional wire feeder guide pipe (3), an inert gas pipeline (4) for introducing inert gas into the refractory sleeve (2), and a sleeve lifting device (5) for controlling the lifting of the refractory sleeve (2). By the wire feeder guiding device, the yield of the alloy can be improved, molten steel exposure during wire feeding is reduced, the gas content in molten steel is reduced, and the purity of the molten steel is improved; and the variety of rare earth steel is increased and the quality of the rare earth steel is improved.