Disclosed is the application of a lightning early warning system in a vibrating wire type reading instrument. The application mainly comprises sending the monitored lightning information by a lightning signal monitoring circuit 1 to a microprocessor CPU (Central Processing Unit) 2 through an SPI (Serial Peripheral Interface) communication interface; displaying the lightning information by the microprocessor CPU 2 through a liquid crystal display circuit 3 and performing voice prompting or alarming on the lightning information through a voice control circuit 4; achieving collection of vibrating wire type sensor signals through a vibrating wire type sensor signal collection circuit 5. Accordingly, the application of the lightning early warning function in the vibrating wire type reading instrument is achieved, the safety and the convenience of the use of the vibrating wire type reading instrument are effectively improved, and an important role is played in dam safety monitoring projects.