The utility model discloses a wiring board punching and marking tool for a power grid. The wiring board punching and marking tool comprises a crossed framework and four positioning marking components, wherein the crossed framework comprises a left arm, a right arm, a front arm and a rear wall; the four positioning marking components are respectively arranged on the four arms. The wiring board punching and marking tool has the beneficial effects that after centers of mounting holes are determined according to positions of the mounting holes in equipment, the positioning marking components of the punching and marking tool are fixed on the arms of the crossed framework; then the punching and marking tool is put on a wiring board; the positioning marking components are hammered by a rawhide hammer, so that the center positions of punched holes in the wiring board can be obtained; by only one-time positioning fixing and marking, position reference points of four holes can be obtained, and connecting lines of the centers of the holes form a square; therefore, the shape and position precision of the finally obtained positions of the four holes is guaranteed, the probability of qualified one-time marking of pitch of the wiring board is improved, the waste of metal material is reduced, and the construction efficiency of secondary construction is improved.