Hard grade binder was the most effective methodto achieve thehigh modulus asphalt mixtures.Taking advantage of the project of the reconstruction and extension of Beijing-Hong Kong-Macaohighway,the proportioning design,road performances,mechanical performances and construction processes of high modulus asphalt mixture using 20 Pen grade binder were studied during the construction of the test section.Results showed that high modulus asphalt mixture was not a binder substitution,aspecialized design methodology and construction techniques are also needed.