The electronic truth is: the use of the electric field change rate alarm is actually a kind of identification alarm after lightning occurs, and the data accuracy is far lower than the data of the lightning location system. The use of rate-of-change early warning itself is based on external electrical changes, which has already represented the occurrence of lightning, so the electronic probe is not a real atmospheric electric field meter, and the early warning lags behind the field grinding type. ●Selected materials can resist acid pollution and are suitable for various harsh environments. ●The system can be networked and can be used in conjunction with other meteorological equipment. ●Can realize remote monitoring. ●Established a multi-product database system for data storage and analysis. By continuously sampling the atmospheric electric field at the installation site by the atmospheric electric field meter, we can know the local electric field intensity, and when a thunderstorm occurs, the electric field intensity will change sharply. A lightning imminent warning occurs. Lightning early warning system is currently recognized as one of the most effective measures to greatly reduce lightning casualties and disasters.