Cable checking instrument

The utility model belongs to the technical field of cable checking equipment, and discloses a cable checking instrument, which comprises a first detection main body and a second detection main body, a first grounding terminal, a first wiring terminal and current detection equipment are arranged on the first detection main body, and a first power supply is arranged in the first detection main body; the first grounding terminal is electrically connected with the first wiring terminal through a first power transmission line, the current detection equipment and the first power supply are connected in series to the first power transmission line, the second detection main body is detachably connected with the first detection main body, and the second detection main body is provided with a second grounding terminal, a second wiring terminal and buzzing equipment. The second grounding terminal is electrically connected with the second wiring terminal through a second power transmission line, and the buzzing device is