Antitheft foundation bolt of overhead transmission line iron tower

The utility model relates to an antitheft foundation bolt of an overhead transmission line iron tower. The antitheft foundation bolt comprises a nut and a threaded rod, wherein the nut and the threaded rod are arranged in a protection cover in a covering mode after being matched. The antitheft foundation bolt further comprises a round gasket cushioned at the bottom of the nut, wherein external threads are arranged on the outer circumference surface of the round gasket, a through hole for the threaded rod to penetrate through is formed in the middle of the round gasket, and a radial pin hole is formed in the annular wall of the round gasket; the protection cover is a metal protection cover, internal threads are arranged on the inner ring of the bottom of the protection cover, and a pin hole is also formed in the side wall of the bottom of the protection cover; the protection cover is in threaded connection with the round gasket, and antitheft plug pins are arranged in the pin holes of the round gasket and the