Fault detection device based on distribution box

The utility model discloses a fault detection device based on a distribution box, comprising a box body, the top of the box body is provided with a groove, the groove is internally provided with a handle, the front side surface of the box body is provided with a front slip cover, the lower part of the front slip cover is covered with a universal meter, the right side of the universal meter is provided with an electrode pen placing groove, and the electrode pen placing groove is provided with a power supply. A rear sliding cover is arranged on the rear side face of the box body, a tool paper support is arranged on the front side of the rear sliding cover, a first tool groove is formed in the left side of the tool paper support, a first partition plate is arranged on the right side of the first tool groove, a U-shaped groove is formed in the right side of the first partition plate, and a second partition plate is arranged on the right side of the U-shaped groove. And a second tool groove is formed in the right