Abstract: In this study, the electromagnetic pulse (EMP) signals were measured at the Shenguang II Upgrade Range and used as the input source to establish a parallel cable model to reveal the crosstalk phenomenon generated by the EMP coupled cables. The law of crosstalk induced by varying cable distances and cable lengths were investigated, and the influence of cable length on the frequency of crosstalk signals was also unraveled. Meanwhile, the attenuation of the cable to the crosstalk signal after the copper foil shielding is discussed. The results indicate that increasing the distance between parallel cables is beneficial for suppression of crosstalk, while increasing the length of parallel cables reduce the anti-interference ability and lower resonance frequency. Therefore, proper shielding can effectively suppress signal crosstalk and provide experimental and theoretical support for implementing various physical diagnostics safely and accurately.