The invention relates to a high-voltage iron tower protection tool, in particular to an anti-bird bird thorn. The anti-bird bird thorn comprises a bird thorn base and is characterized in that a screw cap is arranged on the lower portion of the bird thorn base, the upper portion of the screw cap protrudes to form a screw, and a thread is tapped on the outer circle of the screw; a round hole for allowing mounting of a bird thorn bundle is formed in the upper portion of the screw, the bird thorn bundle is mounted in the round hole, and a nut is mounted on the screw. The anti-bird bird thorn of the structure has the advantages of being simple in structure, convenient to mount and wide in mounting position range.