Based on Duncan-Chang model, using the analysis technology of numerical simulation, the paper used FEM to calculate the core wall dam of pouring asphalt concrete in Xinjiang and got the stress and deformation characteristics of dam in completion period and storage period. The analysis results show that the horizontal maximal displacement and the maximum vertical relative displacement at earthrock body and contacted surface of core wall along river occurs in the place of 1/3 dam height of upstream dam surface;the horizontal displacement along river in completion period is probably symmetry for dam axis;in storage period, under the action of water pressure, the riveralong displacement is reduced at upstream and increased at downstream.The maximal displacement is 9.1 cm at downstream. The maximal subsidence occurs in storage period and is located on dam axis and deviation at downstream of about 1/2 dam height, and the maximal displacement is 16.7 cm.The major principal stress and minor principal stress present the trend of gradual increment from top to bottom of the dam along the direction of dam high, and the maximum value occurs in the contact place between core wall of dam axis and the base area. The result can provide reference for the design, calculation and analysis of similar engineering.