The invention discloses a seismic signal high resolution processing method based on CEEMD (Complementary Ensemble Empirical Mode Decomposition). The method comprises steps of determining the threshold set G according to the average amplitude spectrum of the seismic profile; decomposing single-channel seismic signals with CEEMD to obtain IMF components; determining the threshold H using the correlation coefficient-threshold method; selecting the IMF components in the effective frequency band by the threshold H to perform superposition; performing high resolution processing on the superimposed IMF components with the threshold set G again; reconstructing the processed IMF components and the remaining IMF components to obtain a high resolution processed seismic signal; and processing the remaining seismic signals channel by channel to obtain a high resolution seismic profile. The present invention determines the threshold set G by calculating the average amplitude spectrum of the seismic profile to avoid random interference caused by use of only standard seismic data. Through the threshold H, the IMF components in the effective frequency band are selected to be superimposed and are subjected to the high resolution processing to reduce the influence of noise on the seismic signal resolution.