Abstract: It is necessary to make studies of the stress and deformation properties of the low-faced rockfill dam on mid-thick overburden with difference from high dam on deep overburden. Based on Duncan-Chang E-B model， the 2D finite element method is applied to analyze the stress and deformation characteristics of Shuangxikou concrete face rockfill dam during construction period and impoundment period. The analysis results show that compared with completion period， the settlement of dam body， horizontal displacement， principal stress， stress level and slab deflection during the impoundment period increased. The slab deflection and horizontal displacement of the dam increased most significantly， of which the deflection increased by 16.61 cm， the largest increment in the horizontal displacement up to about 1 times， the vertical displacement increased by about 8%， the major and minor principal stress increased by 10% to 20%， and the stress level increased by approximately 50%. The stress and deformation of the dam are all within the allowable range， and operation of the dam is in a normal condition.