The improvement of the low SNR seismic data imaging quality for marine carbonate target has become the main task in seismic processing work. The problems concerning seismic image processing were summarized after the analysis of the seismic geological conditions and the characteristics of the original data, the study of the targeted processing flow and the performance of the work of test process treatment. On such a basis, the authors established an efficient process consisting of pre-stack comprehensive multi-domain noise suppression, multiples combined attenuation, large offsets anisotropic NMO processing, and anisotropic pre-stack time migration. The results of practical data processing show that the imaging precision of sections are improved greatly, the reflection characteristics of various geological phenomenon can be identified clearly, and the accuracy of data interpretation can be effectively improved.