Every inversion method has its own characteristics and applicable conditions. The inversion based on model can obtain high resolution in vertical and horizontal direction, but the inversion result is affected obviously by wells and wavelet. So it can be used to interpret lithologic body in multiple wells area. Colored inversion is a kind of frequency domain inversion method, which does not depend on initial model and needs limited wells. Moreover, the inversion result is faithful to seismic data and the inversion process is relatively simple. By building forward model and testing parameter, the authors got to know the physical meaning and range of inversion parameters. By using this method, the authors preferably depicted the lateral distribution characteristics of fan body in lower Es3 of Gunan sag. Compared with conventional seismic attributes, the colored inversion results are more coincident with the deposition rules and the lithologic distribution of the actual drilling wells. It is shown that the colored inversion method could improve the resolution of seismic data based on keeping the original phenomena, and hence it is suitable to interpreting the strata or lithologic characteristics in sparse or no well zone.