The utility model discloses an electric power construction warning device who easily carries mainly includes wire, flexible sheath, electrical source controller and plug, the flexible sheath of wire outside parcel, and the one end of being close to the plug on the wire is equipped with electrical source controller, being equipped with a plurality of warning lights and anchor clamps on the flexible sheath of its characterized in that, still being equipped with an infrared inductor installing support on the flexible sheath, be equipped with infrared inductor on the infrared inductor installing support, infrared inductor connects the alarm. The utility model discloses portable arranges at the scene with convenient that warning effect is good, has saved the human cost and reduced staff intensity of labour in electric power maintenance work.