The　present　study　investigated　the　dynamic　fatigue　damage　of　thermally　shocked　granite　with　cyclic　impact　load.　Firstly,　cyclic　impact　tests　were　performed　with　a　split　Hopkinson　pressure　bar　(SHPB)　device　to　study　the　dynamic　stress-strain　relationship　of　water-cooled　granite　at　various　temperatures　and　cyclic　numbers.　Subsequently,　the　dynamic　stress,　elastic　modulus,　maximum　strain　and　strain　rate　affected　by　temperature　and　cyclic　number　were　further　discussed,　the　energy　evolution　and　cumulative　damage　during　cyclic　impact　were　revealed.　Finally,　the　crack　propagation,　failure　mode　and　fatigue　life　(the　maximum　impact　number)　of　granite　were　analyzed,　a　fatigue　life　prediction　model　was　proposed.　The　results　show　that　the　dynamic　stress,　elastic　modulus　and　transmitted　energy　of　granite　exponentially　decrease,　while　the　maximum　strain,　strain　rate,　reflection　energy,　absorption　energy　and　cumulative　damage　exponentially　increase　as　the　cycle　number　increases　with　a　fixed　thermal　treatment　temperature.　In　addition,　microcracks　first　appear　in　the　longitudinal　section,　then　develop　into　macrocracks　and　penetrate　to　cause　granite　failure　as　the　impact　number　increases.　Granite　exhibits　different　failure　modes　after　cyclic　impact.　Split　tensile　single　fracture　surface　failure　before　600　degrees　C　and　multiple　fracture　surface　failure　at　800　degrees　C.　The　fatigue　life　decreases　as　the　temperature　and　impact　pressure　increase.　Dynamic　fatigue　properties　deterioration　rate　increases　as　cycle　number　increases.Microcracks　develop　into　macrocracks　and　penetrate　to　cause　granite　failure.Single-fracture　failure　mode　to　multi-fracture　failure　mode　occurs　at　800　degree　celsius.Fatigue　life　decreases　as　impact　pressure　and　temperature　increase.A　model　for　predicting　fatigue　life　is　developed.