Abstract: Thunderstorm activity is frequent in Fujian area, and the data integrity and data quality of seismic stations are seriously decreased due to the thunderstorm. In order to ensure the normal work of the instrument and the stability and reliability of the data, a number of measures have been taken to reform the external lightning protection and internal lightning protection of the station. The new type of lightning early warning system in this paper monitors the intensity of the atmospheric electric field within 20 km of the station. When the monitoring value of the system has reached the setting of the early warning parameters, it sends out early warning and switches the power automatically. It plays a key role in the lightning protection of the precursory instruments and provides safety protection for the replacement of human work. The seismic station is running steadily.