File with protection function

The utility model discloses a file with protection function relates to file technical field, including file handle and file body, the top of file handle is fixedly connected with mounting shell, the top of mounting shell is equipped with mounting socket, the inner wall of mounting shell both sides is rotatingly connected with bi-directional threaded rod, the both sides of mounting socket is equipped with the both sides threaded rod, the both sides threaded rod is equipped with the both sides threaded rod, the both sides threaded rod is equipped with the both sides threaded rod. Sliding blocks are slidably arranged on the two sides of the outer wall of the two-way threaded rod through threads correspondingly, a limiting groove is formed in the bottom of the mounting shell, limiting blocks are slidably connected to the two sides of the inner wall of the limiting groove correspondingly, the sliding blocks are fixedly connected with the limiting blocks, and a connecting plate is fixedly connected to the tops of t