Strain demodulation method and device, equipment and medium

The embodiment of the invention discloses a strain demodulation method and device of an optical fiber line, equipment and a medium. The method comprises the following steps: acquiring a Brillouin spectrum of backscattered light in an optical fiber line; determining the Brillouin frequency shift of the backscattered light according to a pre-trained frequency shift extraction model and the Brillouin spectrum of the backscattered light; and demodulating the strain of the optical fiber line according to the environment information of the optical fiber line and the Brillouin frequency shift of the backscattering light. Compared with the prior art, the Brillouin frequency shift of the backscattering light can be demodulated more quickly by adopting the frequency shift extraction model, higher reliability can be shown even when the signal-to-noise ratio of the Brillouin spectrum is low, and the strain demodulation speed and demodulation accuracy of an optical fiber line can be improved by executing the technical sch