Communication engineering on-off condition detection device

The utility model relates to the technical field of communication engineering, in particular to a communication engineering on-off condition detection device which comprises a box body, supporting legs are fixedly arranged at the bottom of the box body, a maintenance door is hinged to the front face of the box body, a partition plate is fixedly arranged in the box body, and the interior of the box body is divided into a fan chamber and an installation chamber by the partition plate. An air guide mechanism for exhausting air in the mounting chamber is arranged in the fan chamber; two first supporting frames are arranged in the mounting chamber, the two first supporting frames are symmetrically and fixedly mounted on the surface of the partition plate, a rectangular support is arranged between the two first supporting frames, communication cables are mounted on the first supporting frames and the rectangular support respectively, and a lifting assembly is arranged on one side of the rectangular support; accordi