Cohesive　zone　model　(CZM)　has　gained　considerable　attention　to　investigate　the　fracture　mechanism　of　asphalt　mixture.　The　parameters　of　CZM　in　finite　element　(FE)　model　could　be　validated　according　to　the　semicircular　bending　test　(SCB)　results.　The　fracture　energy　and　strength　of　asphalt　mixture　would　be　obtained　based　on　the　CZM　parameters　after　validation.　As　a　temperature　sensitive　material,　the　influence　of　temperature　on　the　fracture　properties　of　asphalt　mixture　needs　to　be　investigated.　In　this　study,　the　viscoelastic　mechanic　parameters　of　AC-13　asphalt　mixture　were　tested　through　uniaxial　compression　test.　Then　the　SCB　tests　were　conducted　at　the　temperature　of　15°,　25°,　and　35°.　The　bilinear　CZM　parameters　as　well　as　the　fracture　energy　and　strength　at　different　temperature　were　determined　through　an　optimization　approach　with　high　efficiency.　The　results　showed　that　the　strength　of　asphalt　mixture　decreases　with　the　increase　of　temperature,　then　the　decrease　of　strength　reduce　its　fracture　energy.　　©　2023　ASCE.