Abstract: The seismic facies of the Middle and Lower Triassic carbonate rocks in central Sichuan are discussed with the aid of the theory and method of the seismic facies analysis of the elastic rocks, and the environmental background and sedimentary facies conditions are explained in terms of different parameters from the seismic profiles in combination with sedimentary facies analysis. The classification of the lithofacies of the boreholes through the seismic profiles results in the integration of the seismic facies, sedimentary facies and lithofacies analysis and new approach to study sedimentary facies and lithofacies.