High-voltage ultrahigh-voltage special cable

The utility model is a high-voltage ultrahigh-voltage special cable, which belongs to power transmission equipment, and in particular relates to a special cable. The high-voltage ultrahigh-voltage special cable comprises a conductor, a conductor shielding layer, an insulating layer, an insulation shielding layer, a buffering water-resisting layer, a metal sheath layer, a PVC sheath layer and a semi-conductive PVC sheath layer, wherein the metal sheath layer is a corrugated aluminum-zirconium alloy metal sheath, and an anticorrosion layer is arranged between the metal sheath layer and the PVC sheath layer. The high-voltage ultrahigh-voltage special cable can keep the electrical and mechanical properties of the cable, ensures the stability and reliability of the cable, effectively protects the metal sheath against corrosion, and prolongs the service life of the cable.