The paper studied the law of influence of sand-gravel-fill rheology on stress deformation of CFRD. By means of analyzing and selecting the rheological mechanism and rheological analysis of the sand-gravel-fill,and combining with the engineering practice of concrete face sand-gravel-fill dam ,and using three-dimensional nonlinear finite element method,the paper analyzed the effect of rheological on stress and deformation of the dam and used two calculation program of considering sand-gravel rheological effects or not.It then analyzed and compared the the results of two calculation program, and systematically summarized the effect of rheological on stress and deformation of dam. The results show that the rheology makes the stress and deformation of dam and the panel shows a tendency of increase. The effect of rheology on the displacement of upstream of dam is greater, and that on downstream and vertical displacement is lesser.The effect on panel deflection and panel stress along downslope is very small. Therefore, it is necessary to consider the rheological effect of sand-gravel-fill in engineering practice.