The natural material of gravel stone around Nulga reservoir is rich but the material of rock stone is far from dam area, in order to save the engineering investment, the paper researched mix proportion about asphalt concrete core wall which adopted acidic gravel stone of rolled fill dam in Nulga reservoir.The work mainly included the selection of antistripping agent and water stability test of asphalt concrete.It also carried out compression, stretching, bending, static triaxial and penetration test for asphalt concrete of recommended mix proportion. The results show that the various physical and mechanical properties of asphalt concrete of recommended mix proportion can satisfy the requirement of design.