The invention relates to a telescopic insulated hanging rod for electric power overhaul and belongs to the technical field of electric power. The telescopic insulated hanging rod comprises a set of hollow pipes which are mounted in a sleeving mode in sequence from inside to outside; every two adjacent hollow pipes are in sliding fit; clamping mechanisms are arranged between adjacent hollow pipes and comprise limiting columns located in the outer walls of the inner hollow pipes and limiting through holes located in the outer hollow pipes and in inserting fit with the limiting columns; guide through holes are formed in the outer walls of the inner hollow pipes; the limiting columns are located in the guide through holes, and springs are connected between the inner ends of the limiting columns and the inner walls of the hollow pipes; and the distances between the adjacent clamping mechanisms are larger than the distances between the limiting through holes and the ends of the sides, facingthe extending direction, of the hollow pipes. The telescopic insulated hanging rod does not need to be assembled and spliced, mounting operation and demounting operation are both easy, and storage, carrying and transporting are all convenient; and the safety distance between an operator and energized equipment can be guaranteed, and thus using safety is promoted significantly.