The utility model belongs to the technical field of the insulator shields the electric testing technique of cover for the electric power system live working and specifically relates to an insulator shields electric test platform of cover which is equipped with platform base, and the characterized in that platform base top is equipped with wire support and covers cover fixing device, covers cover fixing device by support, high tension lead seat, inner electrode with can dismantle the outer electrode and form, the lower extreme of support be connected with platform base, the upper end of support is equipped with the high tension lead seat, is equipped with the high tension lead port on the high tension lead seat, the high tension lead seat is connected with the inner electrode, the inner electrode upper end of shielding the cover be equipped with the detachable outer electrode, the cross -section of outer electrode is U type joint form, the upper end of the outer electrode dismantled be equipped with the ground lead port, simple structure has, that the installation is dismantled is convenient, change convenient, experimental phenomenon obvious, be convenient for judge advantage such as experimental result.