The utility model discloses an insulating rod assembly (8). The insulating rod assembly (8) comprises a core rod (1) and two umbrella skirts (2) which sleeve the core rod (1) and are integrally formed. Wherein two ends of the core rod (1) are respectively provided with a first connecting thread (3) and a second connecting thread (4), the first connecting thread (3) is an external thread, and the second connecting thread (4) is an internal thread. According to the utility model, the creepage distance of the insulating rod can be effectively increased and the development of electric arcs can behindered under the condition that the insulating rod is as light as possible, thereby improving the insulation reliability of the insulating rod and providing a guarantee for the safety of operators,power grids and equipment.