Abstract: A method of manufacturing a superconducting wire is provided. A MgB2 superconducting wire capable of obtaining a stabilizer through an inexpensive process can have high critical current density and magnetic field characteristics without separate plastic. A seamed portion of the wire can be welded to make it possible to plate the wire with conductive materials and inhibit a decrease in quality of superconducting powder. It is possible to obtain a stabilizer without inserting the superconducting powder into a tube.