The utility model discloses a grounding resistance auxiliary measuring device. The measuring device comprises a first connection clamp and a second connection clamp, at least one of the first connection clamp and the second connection clamp comprises the following components: a U-shaped slot, a connection plate with a round hole, a fastening bolt. A first opening is formed in one side surface of the slot. One end of the first opening is opened to the end head of the slot and forms a breach. A screwed hole is formed in the other side surface of the slot. The connection plate is fixed at the lower end of the slot. The fastening bolt matches the screwed hole. The measuring device comprises a wire and an insulating layer arranged outside the wire. The measuring device comprises two wire clamps, one end of each wire clamp is connected with the connection plate of the connection clamp, and the other end of each wire clamp is connected with the wire. The measuring device is simple in structure, is small in size, and is convenient to manufacture and carry. In addition, the measuring device has strong measuring applicability, and can solve various problems that measurement cannot be carried out by a single pincerlike resistance measuring meter.