Meter tail electricity stealing prevention device

The invention provides a meter tail electricity stealing prevention device which comprises a body, a first cavity is formed in the body, the first cavity is communicated with the outside through a communication hole, and a first threading hole penetrating through the first cavity is formed in the body; the device also comprises two lower pressing blocks, wherein ends of the two lower pressing blocks are hinged to the collinear position of the communication hole and the upper surface of the body, and the other ends of the two lower pressing blocks are arranged in the communication hole and extend into the first cavity; two first elastic pieces, wherein one end of each first elastic piece is fixed to the bottom of the first cavity, and the other end of each first elastic piece is connected with a lower pressing block; and a first moving block which is connected between the two lower pressing blocks, and a second threading hole corresponding to the first threading hole in position is formed in the length directi