The invention, which belongs to the field of oil and gas geophysical exploration, discloses a seismic data denoising method based on peak transformation. Peak transformation is carried out on seismicdata to obtain a signal after peak transformation; wavelet decomposition is carried out on the data after peak transformation, threshold denoising processing is carried out on an obtain wavelet component, and wavelet reconstruction is carried out on an obtained new wavelet component; and inverse peak transformation is carried out to obtain seismic data after the noise reduction processing. According to the method provided by the invention, the seismic data are processed by combining the peak transformation and wavelet analysis to realize a seismic data noise suppression effect; and the processed signal can meet the processing and interpretation work of deep seismic data.