Abstract: The Carboniferous in Chunguang exploration area is mainly composed of volcanic rocks,and the lithology is mainly of tuff with strong heterogeneity and weak effective reflection ability.In order to improve the imaging accuracy of the Carboniferous interior,the OVT domain pre-stack time migration is adopted based on the conventional 3 D processing technology,such as pre-stack relative amplitude preserving denoising technology,adaptive amplitude equalization,multi-domain multiple wave suppression technology,common reflection surface element(CRS) stacking,which can retain the information of offset and azimuth.Through the correction of azimuthal anisotropy,the influence of azimuthal anisotropy can be eliminated,and the imaging accuracy of Carboniferous faulting and fractures can be improved.