A reflective surge suppressing cable is provided wherein surge is suppressed by canceling a specific frequency component of the surge by reflection. A main wire is constituted by an insulated core wire comprising a conductor covered with for plating for increasing resistance, and provided thereon with an insulator of high permittivity. An auxiliary wire is constituted by an insulating core provided with shielding on top of a construction identical with that of the main wire. The reflection is deliberately generated by adjusting the length of the auxiliary wire when winding the auxiliary wire in the longitudinal direction around the periphery of the main wire.