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This invention relates to a high-temperature superconducting cable, comprising: a metal skeleton, high-temperature superconducting tape, impregnated filler, a conductive metal layer, and a metal armor layer; a central cooling channel is provided in the center of the metal skeleton; the high-temperature superconducting tape is stacked into strands, with the entire strand spirally wound tightly against the metal skeleton; a conductive metal layer is wound around the outer side of the high-temperature superconducting tape, and a metal armor layer is also provided; the impregnated filler is filled into the gaps between each strand of the high-temperature superconducting tape using a vacuum pressure impregnation process. Compared with the prior art, in this invention, the high-temperature superconducting tape is stacked into strands and wound on the metal skeleton, and the neatly stacked tape is less susceptible to mechanical damage; there are gaps between the strands of the high-temperature superconducting tape, and the size of the gaps can be changed when the cable is bent, so the high-temperature superconducting tape is less likely to be damaged by excessive stress when the cable is bent; after the cable is bent, the gaps between the strands of the high-temperature superconducting tape can be filled by vacuum pressure impregnation, improving the thermal conductivity and mechanical strength of the cable.