The invention discloses a novel lifting tool for an overhead line of a 500kV transmission line. The lifting tool comprises a first L-shaped pedestal and a second L-shaped pedestal, wherein backs of the first pedestal and the second pedestal are opposite; a fixed bolt is connected between the upper part of first pedestal and the upper part of the second pedestal; a first fixed bayonet is arranged at the bottom of the first pedestal; a second fixed bayonet is arranged at the bottom of the second pedestal; openings of the first fixed bayonet and the second fixed bayonet are opposite; a hole is arranged in the first pedestal and a first adjustable screw is arranged in the hole; and a first driving nut is arranged on the first adjustable screw in a matching manner. The lifting tool has the following advantages that by adopting a lifting structure with two lifting points, other protective measures are not needed in operation, so that the on-the-spot workload is reduced and the efficiency is improved; the universality is strong, through matching installation of the two pedestals and clamping of the two fixed bayonets, the lifting tool can be applicable to all existing 220-500kV tower shapes; a lifting travel of the adjustable screw is long to meet operation needs; and the lifting tool is simple in structure and convenient to use.