The utility model relates to a high -voltage power tower earthing device, specifically speaking relate to an oildag earthing pole. An oildag earthing pole, includes graphite tightrope, its characterized in that: the graphite tightrope install in the oildag piece, stretch out at both ends has the link that is used for interconnecting link, the oildag piece be microscler massive structure, the oildag piece form for oildag and water mixed and cured, the graphite tightrope be the state of wraping around that spirals in the oildag piece for voltage uniform delivery. An oildag earthing pole of structure has highly electrically conductive like this, and high absorption, plasticity is high, and pollution -free to soil, the term of validityexpiry date is long, and is corrosion -resistant, and production is simple, and ground resistance is stable, with soil combined ability reinforce, and advantage that contact resistance is little.