Abstract: The relationship between the high-temperature dynamic modulus of intermediate courses of asphalt-concrete pavement and ruts in road was studied. The results showed that increasing the high-temperature dynamic modulus of intermediate courses can effectively reduce the compressive and shearing strain of asphalt-concrete mixture under traffic loading, and that increasing the divergence angle of the mixture to transfer load downwards can avoid the accidents due to road ruts. In addition, the application of modifying dopes to concrete can increase its high-temperature dynamic modulus so as to provide the mixture whose mechanical properties are superior to the SBS modified asphalt mixture.