The present utility model discloses a cable formed by mutually twisting a plurality of polytetrafluoroethylene powder pushing insulated wires and shielding wires, the cable is provided with a plurality of polytetrafluoroethylene powder pushing insulated wires and a plurality of polytetrafluoroethylene powder pushing insulated shielding wires, each polytetrafluoroethylene powder pushing insulated wire is provided with a wire core, a polytetrafluoroethylene powder pushing insulated layer is wrapped outside the wire core, each polytetrafluoroethylene powder pushing insulated shielding wire is also provided with a wire core, a polytetrafluoroethylene powder pushing insulated layer is also wrapped outside the wire core, and a splitting metal shielding layer is wrapped outside the polytetrafluoroethylene powder pushing insulated layer; a total metal shielding layer is wrapped outside the twisted wires, and a sheath is sleeved outside the total metal shielding layer. In the cable, the insulated wires and the shielding wires are twisted, and the sheath is sleeved outside, thus damages of the metal shielding layers and the insulated layers caused by long-time sun scorching and rain drenching can be effectively prevented, and the cable can be prevented from being gnawed and destroyed by bugs and ants.