The　chopped　aramid　fiber　reinforced　rubber　composite　(AFRC)　has　been　widely　used　in　the　tire　treads　for　its　excellent　characteristics.　The　viscoelasticity　which　is　an　important　mechanical　property　for　rubber　matrix　would　be　influenced　by　the　adding　of　aramid　fiber.　In　this　study,　the　dynamic　and　quasi-static　viscoelasticity　were　investigated　via　the　dynamic　thermal　analysis　experiment　and　the　mullins　experiment　with　multi-step　relaxation,　respectively.　The　frequency　and　temperature　scanning　were　employed　for　AFRC　with　different　fiber　volume　fractions,　fiber　aspect　ratios　and　fiber　orientation　distributions.　The　effects　of　constituent　parameters　on　the　dynamic　viscoelasticity　were　studied　as　well　as　the　general　rule　of　reinforcing　effect　of　aramid　fiber　on　rubber　materials　was　presented.　The　stress　relaxation　for　AFRC　were　analysed　basing　on　the　experimental　results.　In　addition,　The　ability　of　the　viscoelastic　constitutive　model　to　describe　the　quasi-static　viscoelastic　behavior　of　AFRC　were　explored.　©　2020　Trans　Tech　Publications　Ltd,　Switzerland.