The invention relates to a medium- and low-voltage multi-functional grounding wire, and belongs to the technical field of power safety equipment. The medium- and low-voltage multi-functional groundingwire comprises a grounding wire and a lighting power verification device, wherein the lighting power verification device is arranged at a middle position of the grounding wire and comprises a hoop and an additive piece, the hoop is closely fixed with the grounding wire by a fastening piece, a pre-tightening force is generated between the hoop and the grounding wire, the hoop is of a cylindrical structure, the grounding wire penetrates through the hoop, the additive piece is loaded at an outer side of the hoop by a fixed rack and is of a cylindrical structure parallel to the hoop, one end of the additive piece is connected with the hoop via a lead, a light-emitting source is arranged at the other end, a battery and an induction power electroscope are internally arranged in the additive piece, and two ends of the grounding wire are respectively connected to a bonding post I of the hoop and a bonding post II of the additive piece. The hanging operation of the grounding wire is completedby a safe, efficient, time-saving and labor-saving new tool.