To make full use of the abandon slag material to fill the dam with asphalt concrete core,and reduce the local ecological damage,the structure and material properties of asphalt concrete core-wall mixed earth dam filled with abandon slag were described,and the stability of seepage flow,slope stability and settlement were analyzed.The results showed that the seepage ratio,slope stability,safety factor and settlement amount of asphalt concrete core-wall mixed earth dam met the requirements of the code under different working conditions.It can provide a reference for the design of similar projects.