A signal extraction method for the twist angle of iced single conductor in natural environment was proposed in this paper and the corresponding feasibility analysis was carried out. Firstly, the direction cosine matrix (DCM) was used to solve the attitude of the original signal collected by the selected Euler angle sensor, and the angle signal with three components (time domain average wind load component, component related to random fluctuating wind load and twist angle component) was obtained; Then, combined with corresponding thresholds, the component related to the random fluctuating wind load was filtered out; Finally, the singularity detection of the remaining two types of components was carried out to realize the extraction of the time points and the twist amplitudes of the twist signal. The numerical simulation results showed that the proposed method can realize the reconstruction of twist signal with 0 error at the time of twist occurrence and the amplitude error of single twist angle less than 5%.