The invention relates to the technical field of power equipment, and particularly relates to a telescoping high voltage insulating rod comprising an insulating bar, a stainless steel clip, DC motor batteries and fine wires. The insulating bar is composed of two insulating bars which are nested together. Every single internal insulating bar and the external insulating bar are composed of three insulating bars with a hollow structure, and diameter of the three insulating bars with the hollow structure decreases in turn. A fixed circular ring is connected at the internal side of the head part of one end of each segment of the external insulating bar. The head segment and the tail segment of the external insulating bar are respectively provided with a DC motor. The fine wires are wound on the shafts of the DC motors. The fine wires penetrate through the circular ring of the internal side of the external insulating bar and are wound a circle on the circular ring. The stainless steel clip is arranged at the tail end of the insulating bar. One piece of the clip is connected with the external insulating bar, and the other piece of the clip is connected with the internal insulating bar. Reliable connection can be realized, and artificial climbing and an elevating engineering vehicle can be omitted. The telescoping high voltage insulating rod has the characteristics of being simple in structure, easy and convenient to operate, variable in size and flexible and convenient to use so that personal safety and working efficiency of operators can be enhanced.