Abstract:The rock strain energy derived from two-phase medium theory consists of pore strain energy and frame strain energy. The seismic porosity and rock seismic stress which are obtained from inversion of the two energy components reflect stratigraph is structure and frame elastic characteristic in different aspects. In triangular template representation,the two kinds of parameters and some lithologic lines obtained by analysing log data indicate regular lithologic distributions,which shows us different rock types. Lithology prediction using such a template brings very good geological effect in practical application,offers a new means for predicting some lithologic hydrocarbon reservoir and adds new contents to seismic lithology study.