Grounding system for equipment of electronic information system machine room

The utility model relates to a grounding system for equipment of an electronic information system machine room, which comprises an outer guard tube and an inner guard tube, wherein the inner guard tube is sleeved into a hollow cavity of the outer guard tube, the outer wall of the inner guard tube is isolated from the inner wall of the outer guard tube via a support, a grounding main line connected with a first grounding plate of the equipment of the electronic information system machine room penetrates through a hollow cavity of the inner guard tube to be connected with an earth electrode embedded under the ground, two ends of the outer guard tube are grounded, and one end of the inner guard tube is grounded. Since the grounding system adopts the structure that the inner guard tube is sleeved into the hollow cavity of the outer guard tube, the outer wall of the inner guard tube is isolated from the inner wall of the outer guard tube via the support, and the grounding main line connected with the first groundi