Grounding resistance on-line detector with high precision

The utility model provides a grounding resistance on-line detector with high accuracy, which comprises a detector main body, a through hole is arranged on the detector main body, and grounding flat steel is movably contacted on the through hole. According to the utility model, the grounding down lead directly passes through the through hole on the detector main body, and the U-shaped connecting plate and the grounding flat steel are fixed on the L-shaped connecting plate through the first fixing bolt, so that the lightning protection grounding effect and the normal operation of facilities are not influenced, the grounding resistance value can be observed at any time through the liquid crystal display screen, and the interface is connected with a user computer. After the data is transmitted to the cloud, the computer analyzes the data, the detector main body periodically collects the grounding resistance through the Internet of Things communication technology and reports the collected grounding resistance to t