Modular lightning protection grounding device

The utility model provides a modularized lightning protection grounding device, comprising an installation bottom plate and a lightning rod installation cylinder, two sides of the installation bottom plate are symmetrically provided with four support leg installation racks, one end of an installation plate A is connected with the installation bottom plate, and the other end is provided with fixing bolts connected with the support leg installation racks. Supporting legs are arranged on the side, away from the mounting bottom plate, of the supporting leg mounting frame, an electric field measuring instrument shell is arranged on one side of the upper end face of the mounting bottom plate, and a mounting plate B and fixing bolts are arranged below the electric field measuring instrument shell and connected with the mounting bottom plate. The measuring instrument has the advantages that the installation of the measuring instrument is facilitated by arranging the installation bottom plate and the electrical compon