The experiments of EMP coupling to shielded cable have been done in the horizontally polarized dipole radiator. The test system of the experiment and the measurement method are both introduced in this article. The tested coaxial cable is under different conditions—the cable is above the ground or on the ground, both terminals are open circuit, short circuit or one is open and the other is short. The core and the sheath are connected via a resistance of 50W . The results of the experiments are analysed based on double transmission lines theory and good agreement is obtained.