Abstract: This paper analyzes the principle of earth-rockfill dam hydraulic fracturing,selects the biggest section in river area for typical sections and conducts the calculation and analysis of hydraulic fracturing by using the finite element method for Xinjiang turpan ertanggou asphalt concrete core-wall earth-rockfill dam.It comes to the conclusion that the intermediate principal stress of any elevation in core-wall earthrockfill dam is less than the vertical stress,and the intermediate principal stress and vertical stress is greater than the water pressure.So,the core-wall hydraulic fracturing of the dam is not going to happen.