Grounding electrode

The invention discloses a grounding electrode, which comprises a grounding assembly and a supporting assembly, wherein the grounding assembly comprises a drill bit part and a straight cylinder part, the drill bit part is conical, one end of the drill bit part is a tip, the end, away from the tip, of the drill bit part is a connecting end, the straight cylinder part comprises at least two arc plates, the arc plates are rotationally connected with the connecting end, a containing cavity used for containing the supporting assembly is formed between the at least two arc plates, the supporting assembly is inserted into the containing cavity when inserted into the ground, the supporting assembly abuts against the arc plates, the end, away from the drill bit part, of the supporting assembly extends out of the containing cavity, the supporting assembly is separated from the containing cavity when pulled out of the ground, and the arc plates can rotate in the axis direction of the containing cavity. According to the i