This　paper　investigates　the　equivalent　viscoelastic　behavior　of　granite　after　different　high-temperature　treatments　under　stress　waves.　The　equivalent　viscoelastic　behavior　of　granite　after　different　high-temperature　treatments　under　dynamic　conditions　was　investigated　by　the　pendulum　impact　test,　while　its　quasi-static　behavior　was　investigated　by　the　uniaxial　compression　test.　The　attenuation　coefficient,　wave　number,　storage　modulus　and　loss　modulus　of　granite　after　high-temperature　treatments　were　determined　based　on　the　pendulum　impact　test.　A　modified　three-element　model　was　proposed　to　describe　the　relationship　between　the　equivalent　viscoelastic　behavior　of　granite　and　temperature.　The　proposed　model　was　validated　by　comparing　the　storage　modulus　and　loss　modulus　predicted　by　the　proposed　model　and　those　based　on　the　pendulum　impact　test.　The　results　show　that　the　attenuation　coefficient　and　wave　number　increase　as　temperature　increases.　While　the　storage　modulus　and　loss　modulus　decrease　as　the　temperature　increases.　The　proposed　model　could　describe　the　storage　modulus　and　loss　modulus　of　granite　after　high-temperature　treatment　with　acceptable　accuracy.