High-elasticity　modified　asphalt　is　widely　used　in　OGFC　and　bridge　deck　paving　due　to　its　high　viscosity　and　strong　displacement　recovery　capacity.　It　can　improve　the　high-temperature　deformation　resistance　and　elastic　recovery　ability　of　the　pavement.　Especially　in　bridge　deck　pavement,　high-elastic　modified　asphalt　can　inhibit　the　formation　of　reflective　cracks　and　extend　the　service　life.　In　order　to　quantitatively　evaluate　properties　of　the　high-elasticity　modified　asphalt,　rheological　properties　are　studied　by　using　a　dynamic　shear　rheometer　(DSR)　test.　The　parameters　were　fitted　with　the　Burgers　model,　and　the　constitutive　equation　was　established.　The　3s　elastic　recovery　rate　Er　was　proposed　to　quantitatively　evaluate　the　elastic　recovery　of　high-elasticity　modified　asphalt.　The　experimental　results　show　that　the　instantaneous　modulus　of　elasticity　G0　and　the　delayed　modulus　of　elasticity　G1　can　be　used　to　evaluate　the　elastic　capacity.　Er　can　quantitatively　evaluate　the　elastic　resilience　of　high-elasticity　modified　asphalt.　The　correlation　coefficient　between　the　test　results　of　high-elasticity　modified　asphalt　and　those　of　impact　toughness　evaluation　reached　0.9966,　and　the　3s　elastic　recovery　rate　Er　could　be　used　to　evaluate　the　elastic　recovery　ability　of　high-elasticity　modified　asphalt.