<p>Silicone rubber (SR) is widely used in the field of cable accessories because of its excellent heat resistance, mechanical strength, electrical insulation properties, and good processability. The paper comprehensively discusses the thermal conductivity, electrical and mechanical properties of SR, and establishes the connection between electrical-thermal-force properties. The effects of the electric field, temperature gradient, mechanical stress, and humid environment on the aging performance of SR are introduced, and the correlation between the morphological characteristics of electric dendrite growth and charge transport behavior under the action of multi-physical fields is summarized. Combined with the operating conditions of cable accessories, from the perspective of improving the safe and reliable operation of SR insulation, the addition of nonlinear materials to SR composite materials to regulate the electric field and suppression of partial discharges, based on the mesoscopic scale to establish the relationship between the internal structure and the electric dendrites, use the self-repairing materials to inhibit the electric dendrites, and multi-physical simulation to establish the aging model of the cable accessories.</p>