The invention relates to an insulation resistance measuring rod, which is composed of an insulating rod, copper electrodes and wires, and is characterized in that two copper electrodes are fixed on the insulating rod, and the two copper electrodes are connected with an insulation resistance meter through the wires respectively; the copper electrodes are in the shape of a triangle, and the bottom edge of the triangle is in the shape of an inward concave arc so as to be contacted with an insulator iron cap and prevent slipping. When the insulation resistance measuring rod is used, the insulating rod is held in hand, the two copper electrodes are enabled to be contacted with two iron caps of an insulator, and measurement is performed on the insulators one by one. The beneficial effects are that the bottom edge of each triangular copper electrode of the insulation resistance measuring rod is in the shape of an inward concave arc, thereby facilitating to be contacted with the insulator iron caps, preventing slipping and saving time and labor. The insulation resistance measuring rod is convenient to operate, accelerates the measurement speed, improves the work efficiency and eliminates potential safety hazards.