The invention relates to a double bundle conductor spacer mounting auxiliary rod, comprising a cross arm, a left screw rod, a left fixing ring, a right screw rod, a right fixing ring, a connecting sleeve and a telescopic rod, wherein the cross arm is horizontally arranged at the upper part; the left screw rod is arranged at the left side of the cross arm, and the left fixing ring is positioned atthe left end of the left screw rod; the right screw rod is arranged at the right side of the cross arm, and the right fixing ring is arranged at the right end of the right screw rod; the connecting sleeve is arranged in the middle of the cross arm; the telescopic rod is arranged at the lower part of the connecting sleeve. After the double bundle conductor spacer mounting auxiliary rod provided bythe embodiments of the invention is adopted, a good effect is achieved; the double bundle conductor spacer mounting auxiliary rod effectively solves the problem that a double bundle conductor spacingis not easy to control by means of the flexible adjustment of the screw rods and threaded sleeves, is stable in double bundle conductor fixing size, easy to assemble and disassemble and good in usingeffect, and effectively increases the working efficiency.