Pipeline safety early warning system

The utility model discloses a pipeline safety early warning system, and belongs to the field of pipeline monitoring. The pipeline safety early warning system comprises a first laser, a fiber optic interferometer, a photovoltaic conversion module, a first optical fiber, a pulse laser generating device, a coupling module, a photovoltaic detector and a processing module, wherein the fiber optic interferometer is used for generating first interference optical waves and second interference optical waves; the photovoltaic conversion module is used for converting the first interference optical waves and the second interference optical waves into first electric signals and second electric signals; the pulse laser generating device is used for providing a pulse laser; the coupling module is used for inputting the pulse laser into the first optical fiber, and outputting backward coherent Rayleigh scattered light; the photovoltaic detector is used for conducting photovoltaic conversion on the coherent Rayleigh scattered