The utility model relates to a tension-resistant steel tube rod of an extra-high voltage direct current ground electrode circuit. The tension-resistant steel tube rod consists of ground wire hanging points, conducting wire cross arms, a main rod and a chassis flange. The ground wire hanging points are arranged at the top of the rod for hanging ground wires; the conducting wire cross arms are arranged at the lower part of a rod head for hanging conducting wires; the main rod is formed by assembling and connecting conic steel tubes; sections of the conic steel tubes are connected with each other through rigid flanges; the main rod is connected with a basic foundation bolt through the chassis flange; and the steel tube members are made from middle strength steel. With the adoption of the embodiment provided by the utility model, the requirements of the extra-high voltage direct current ground electrode circuit can be met.