The invention discloses a device for installing a place holder in an electrified way. The device comprises an insulating rod, supporting arms, a fixing plate and a locking hook, wherein one end part of the insulating rod is connected with the fixing plate in a movable manner, the fixing plate can rotate around the insulating rod, the two supporting arms are fixedly connected on the fixing plate, and the locking hook is fixed on the insulating rod on one side of the fixing plate. The device has the beneficial effects of being precise in structure, elaborate in design, convenient, efficient, safe and practical, being capable of achieving the function of installing the place holder in an electrified way, greatly increasing working efficiency, reducing labor cost, ensuring safe operation of electricity production and operation, and reducing power outage times and duration of power lines.