The invention discloses a high-voltage power cable which comprises a core, an insulating layer, a shielding layer and a protective layer. The insulating layer is arranged on the outside of the core, the shielding layer is arranged on the outside of the insulating layer, and the protective layer is arranged on the outside of the shielding layer. The high-voltage power cable is characterized by further comprising a first conducting wire, a second conducting wire, a third conducting wire, a first resistor, a second resistor, a third resistor, a first AD (analog and digital) unit, a second AD unit, a third AD unit, a controller, a display unit, an alarm unit, a first direct-current power source and a second direct-current power source; the first conducting wire, the second conducting wire and the third conducting wire are tangential to one another pairwise; the first conducting wire, the second conducting wire and the third conducting wire are arranged in the protective layer; the first conducting wire, the second conducting wire and the third conducting wire are respectively parallel to the core. The high-voltage power cable has the advantages that stolen locations can be immediately known at the moment when thieves steal the protective layer of the power cable, and accordingly the safety of power transmission lines can be effectively protected.