The paper established a new finite element analysis method so as to provide a reference for the accurate and reasonable 3D dynamic analysis of CFRD. By means of analyzing and selecting the dynamic constitutive model and analysis of the sand-gravel-fill,It realized the dynamic equivalent linear viscoelastic model of grit stone based on ABAQUS software,and carried out the seismic response analysis for a built high concrete face rock-fill dam ,and focused on the analysis of dynamic response such as dam response acceleration, dynamic displacement and residual deformation. Results show that the dam response under the action of earthquake is not strong,but under the action of earthquake along with the river direction,the whipping effect appears in the dam crest and it is necessary to take the corresponding measures of seismic engineering.