Abstract: Seismic sedimentology is applicable for prediction of plane sedimentary facies in isochronal element by means of seismic lateral resolution. It is applied to lithologic interpretation of the seismic profile without obvious characteristic changes. Y district is characterized by big buried depth of organic reef?bank body, low resolution of seismic data, not obvious reflection characteristics in the seismic profile. With the guidance of seismic sedimentology, this paper optimized the seismic attributes under the control of paleogeomorphology by using spectral decomposition data, qualitatively characterized the scale and boundary of the organic reef?bank body; and using double?plane interpretation method, verified the interpreted reef?bank body in which the plane attributes were projected on the seismic profile, thus largely reducing the multiplicity of solutions of geological bodies and improving the prediction precision of the reservoirs. Finally, by using colored inversion technique which does not depend on any model, the reef?bank reservoir’s thickness can be quantitatively predicted, and a set of technologies for prediction of organic reef?bank carbonate reservoirs is then established in this paper