The innovatively designed indirect conductive socket and the mating snap plug of the present invention, through indirect conductive communication with the power source, not only effectively avoid arcsparks caused by the collision and friction between the plug and the metal part of the socket and eliminate potential safety hazards, but also greatly reduce the quantity of conductive metal materials. Before the mating operation of the plug and the socket is completed, the conductive connection contact of the socket is in a power-off state. Under the effect of a sleeve sealing ring disposed on the indirect conductive socket, an elastic gasket and a mating sealing ring disposed on the mating snap plug, after the mating operation of the plug and the socket is completed, the conductive connection contact is completely wrapped and protected, and can be used safely in a humid or water environment. When the plug is pulled out of the socket, the conductive connection contact is immediately powered off so as to achieve a good safety protection effect. Further, a fluid conductive medium in the dielectric conductive ball of the present invention is completely enclosed in a closed space, cannotbe leaked or lost, and is safe and reliable to use.