A method for suppressing interference fading noise of optical fibre sensing data, characterized by comprising: acquiring optical fibre sensing data not subjected to interference fading noise suppression; determining a fading point amplitude threshold based on the optical fibre sensing data; determining a signal fading point based on the fading point amplitude threshold; performing signal interpolation processing on the optical fibre sensing data corresponding to the signal fading point to obtain a signal subjected to interference fading noise suppression; and performing phase demodulation and phase unwrapping processing on the signal subjected to interference fading noise suppression to obtain processed optical fibre sensing data, characterized in that determining the fading point amplitude threshold based on the optical fibre sensing data comprises: determining a preset reference position; determining, among the optical fibre sensing data, at least one set of reference optical fibre sensing data within a preset range of the preset reference position; generating a corresponding amplitude-phase diagram based on the at least one set of reference optical fibre sensing data; determining phase divergence information of the at least one set of reference optical fibre sensing data based on the amplitude-phase diagram; and determining the fading point amplitude threshold based on the signal phase divergence information, performing signal interpolation processing on the optical fibre sensing data corresponding to the signal fading point to obtain a signal subjected to interference fading noise suppression comprises: performing signal interpolation processing on all fading points by an adjacent normal point interpolation method to obtain a signal subjected to interference fading noise suppression. acquiring optical fibre sensing data not subjected to interference fading noise suppression; determining a fading point amplitude threshold based on the optical fibre sensing data; determining a signal fading point based on the fading point amplitude threshold; performing signal interpolation processing on the optical fibre sensing data corresponding to the signal fading point to obtain a signal subjected to interference fading noise suppression; and performing phase demodulation and phase unwrapping processing on the signal subjected to interference fading noise suppression to obtain processed optical fibre sensing data, characterized in that determining the fading point amplitude threshold based on the optical fibre sensing data comprises: determining a preset reference position; determining, among the optical fibre sensing data, at least one set of reference optical fibre sensing data within a preset range of the preset reference position; generating a corresponding amplitude-phase diagram based on the at least one set of reference optical fibre sensing data; determining phase divergence information of the at least one set of reference optical fibre sensing data based on the amplitude-phase diagram; and determining the fading point amplitude threshold based on the signal phase divergence information, performing signal interpolation processing on the optical fibre sensing data corresponding to the signal fading point to obtain a signal subjected to interference fading noise suppression comprises: performing signal interpolation processing on all fading points by an adjacent normal point interpolation method to obtain a signal subjected to interference fading noise suppression.