The invention relates to a dual rod supporting structure of 10KV overhead line high-voltage equipment and a mounting method of the dual rod supporting structure, and belongs to the technical field ofhigh-voltage power transmission and distribution. The dual rod supporting structure of the 10KV overhead line high-voltage equipment is provided with horizontal frames, a supporting frame and fixed assemblies. The fixed assemblies are provided with first fixed hoops. The hoops are provided with first hoop bodies and second hoop bodies. The first hoop bodies and the second hoop bodies are providedwith first bending grooves and semicircular second bending grooves. The first hoop bodies and the second hoop bodies are arranged on rod columns through the first bending grooves in a surrounding manner. Second fixed lugs are fixedly connected to ends of the horizontal frames. After the second bending grooves are in butt joint, hollow cylindrical first sliding sleeves are formed. The dual rod supporting structure has the advantage that high-voltage equipment mounting can be more stable.