Abstract: Silicone rubber cables often suffer from printing pollution, which affects their usage. Atmospheric pressure plasma surface modification technology is widely used to improve material surface properties, but corresponding conditions, methods, and effects for solving printing pollution problems still need to be researched. In the paper, the surface of silicone rubber was modified by air arc jet generated by a high-frequency AC power supply. Discharge characteristics of the arc were characterized by luminous images, electrical properties, and spectral line intensity. Surface temperature rise of silicone rubber after the discharge was obtained by a thermography. Dynamic treatment of silicone rubber surface at different speeds was simulated in actual processing conditions. The results indicated that arc treatment could effectively solve printing pollution problem on the surface of silicone rubber, reduce water contact angle of silicone rubber surface at the same time. Under low-speed treatment conditions, surface breakdown voltage and breakdown voltage decreased due to the erosion effect of the arc. SEM and EDS detection results implied that crosslinking degree of silicone rubber surface increased after the treatment, which inhibited molecular diffusion movement at silicone rubber interface and thus improved its resistance to printing pollution.