Abstract: Transmission lines in the power system are easily affected by weather,which gives rise to galloping phenomenon and threatens the safe operation of the power grid. Aiming at this phenomenon,a conductor galloping monitoring method based on distributed optical fiber sensing technology and Wiener filtering is proposed. The galloping information of transmission lines is obtained by analyzing the backward Rayleigh scattering signal propagating along the fiber. The quadrature demodulation algorithm is used to realize galloping location and waveform reconstruction. Because of the phase noise in waveform reconstruction, the wiener filtering algorithm is used to eliminate phase shift and environmental noise. Simulation and experimental results show that this method can present the whole line galloping condition directly. When the galloping signal frequency is 0.8 Hz,the low frequency drift signal of 0.05 Hz is successfully eliminated,and the signal-to-noise ratio（SNR）is increased by 9.89 dB. The influence of environmental noise is reduced. This method provides a new idea for galloping monitoring of overhead line.