Aiming at the problem that there are a lot of Gauss white noise in PD signal of mine motor, a denoising method based on VMD and SVD is proposed. Firstly, the VMD algorithm is used to decompose the noisy signal; then the IMF component that meets the requirements is selected by the kurtosis criterion to reconstruct the signal; finally, the VMD reconstructed signal is denoised by the singular value algorithm to obtain a relatively pure PD signal. The experimental data show that the signal-to-noise ratio and mean square error of the PD signal obtained by the above methods are better, and the Gaussian white noise in the PD signal of mine motor can be removed more effectively, which achieves the expected effect and has certain engineering value.