Transformer anti-theft device

The utility model discloses a transformer anti-theft device which comprises a shell (1), a plug (2), a threaded rod (3) and a nut (4). The transformer anti-theft device is characterized in that the shell (1) of the transformer anti-theft device is a rectangular incision body, a U-shaped opening (C) is formed in the lower portion of the shell (1), a two-step through hole (B) is formed in the position, perpendicular to the middle of the opening (C), of the upper portion of the shell (1), inner threads are arranged on the upper portion of the through hole (B), a single blind hole (D) is formed in the lower portion of the shell (1), the nut (4) is installed inside the single blind hole (D), the threaded rod (3) is connected with the nut (4) through the through hole (B), and the plug (2) is connected with the inner threads on the upper portion of the through hole (B). The transformer anti-theft device is novel in structure, convenient to install, safe, reliable, capable of effectively preventing a transformer from