This　paper　investigates　the　global　strong　solutions　of　non-isentropic　incompressible　viscoelastic　fluids　in　the　periodic　domain.　When　the　initial　velocity,　deformation　and　temperature　is　small　for　the　given　physical　parameters,　we　prove　that　the　global　existence　and　uniquence　of　strong　solutions.　And　the　result　mathematically　verifies　that　for　the　large　elasticity　coefficient,　the　initial　velocity　and　temperature　can　be　large.　Moreover,　we　also　get　decay-in-time　estimates　and　find　that　the　velocity　decays　(exponential　decay)　faster　than　the　temperature　(algebraic　decay)　in　Lagrangian　coordinates.　©　2025　Copyright　held　by　the　owner/author(s).