The utility model discloses a torsion-proof lifting support for a power distribution installation cross arm. The torsion-proof lifting support for the power distribution installation cross arm comprises two support plates, wherein the support plates consist of upper support plates and lower support plates which are connected; plate surfaces of the upper support plates and the lower support plates are perpendicular to one another; the upper ends of the two upper support plates are fixedly connected through support plate bolts; a clamping plate is arranged at a lower end of each of two lower support plates; a clamping groove is formed in a baffle; a baffle bolt is fixed on each lower support plate; the baffle bolts are connected with the upper ends of the baffles; the clamping grooves are shielded by the lower parts of the baffles; the plate surfaces of the baffles are in the same direction as those of the lower support plates. Through the torsion-proof lifting support of the power distribution installation cross arm, various cross arms are fixed in the support, so that the cross arms are in fixed state no matter the cross arms are at any workplaces, thereby achieving the purpose of facilitating construction and improving the safety.