Power transmission line tower mounting bracket

The utility model discloses a power transmission line tower installation support which comprises a limiting ring detachably arranged on an external power transmission line tower in a sleeving mode. At least three fixing pull rods are detachably and evenly arranged on the outer wall of the limiting ring at intervals, and the end, away from the limiting ring, of each fixing pull rod is connected with a fixing block pre-buried underground. Each fixed pull rod comprises an internal thread sleeve rod which is detachably connected with the corresponding limiting ring through a connecting piece, and an external thread rod is in threaded connection with the end, away from the corresponding connecting piece, of each internal thread sleeve rod; a fixing hook detachably connected with the fixing block is fixedly arranged at the end, away from the internal thread sleeve rod, of the external thread rod. The auxiliary fixing device has the advantages of being stable and reliable in auxiliary fixing and not prone to looseni