Grounding resistance measuring instrument for installation of power distribution cabinet

The utility model relates to the technical field of resistance measuring instruments, in particular to a power distribution cabinet installation grounding resistance measuring instrument which comprises a resistance measuring instrument body and a protection box, the protection box comprises a first box body and a second box body, the second box body is connected with the first box body in an inserted mode, and the first box body comprises a bottom plate, a left side protection plate and a front side protection plate. The front side protection plate is fixedly connected with four spacing columns, the second box body comprises a right side protection plate, a back protection plate and a cover plate, and the left side protection plate, the right side protection plate and the back protection plate are all connected with inner protection plates through reset springs; the resistance measuring instrument body is transported through the protection box, so that the resistance measuring instrument body is prevented fr