The present invention relates to a method for fabricating a filament type high-temperature superconducting wire in which a thin film type high-temperature superconducting wire is fabricated into a filament shape suitable for use with alternating current. The method includes depositing a conducting ceramic or metal epitaxially on a metal substrate 10 having bi-axially textured property to deposit a conductive thin film layer 20 (S10); depositing silver, copper, nickel, silver and copper, or a nickel alloy epitaxially on the deposited conductive thin film layer 20 to deposit a metal layer 30 (S20); cutting the deposited metal layer 30 into a filament shape having a predetermined width using a laser, a slitter, or etching and separating the cut metal layer from the conductive film layer 20 by selective etching, stress generation, or a difference in thermal expansion coefficients to form a metal filament 40 (S30); coating a single layer or multi-layers of a ceramic buffer layer 41 on the outside of the separated metal filament 40 (S40); coating a superconducting layer 42 on the outside of the ceramic buffer layer 41 (S50) ; and coating a single layer or multi-layers of a metal protective layer 43 on the outside of the superconducting layer 42 (S60).