Abstract: To address the prevalent issues of insufficient tensile strength and poor weather resistance in current electric fence cables, a novel security cable utilizing high-conductivity carbon materials was developed. The design of a three-layer composite structure, consisting of a "tension member, conductive layer, and outer sheath," along with the raw material formulation system and the manufacturing process, was elaborated in detail. The synergistic mechanism of component materials and the influence of key process parameters on the final product performance were thoroughly analyzed, and systematic tests were conducted on the cable's core performance indicators. The results indicated that, compared with traditional similar cables on the market, the developed security cable for electric fences possessed the following advantages: the average tensile strength was recorded at 10.2~10.8 kN, which represented an increase of approximately 35% compared to similar products; the resistance to bending deformation was outstanding, and under the condition of a bending radius of 8 times the cable diameter, the rate of change in resistance was found to be less than 0.8% after 1000 bending cycles at different frequencies, which was lower than the 1.5%~3.5% observed in similar products; normal operation was maintained after 3000 forward and reverse cyclic bending cycles, whereas significant performance degradation was observed in similar products; the low-temperature adaptability was extremely strong, as no cracking was observed after the cable was placed in –50 °C environment for 72 hours, and the retention rate of tensile strength at –40 °C reached over 292%, exceeding the 150%~200% of similar products; and the service life was extended by more than 50% compared with traditional cables. It was concluded that the practical application requirements for electric fences in scenarios such as livestock farms and farms could be satisfied by this cable.