©,　2015,　Huazhong　University　of　Science　and　Technology.　All　right　reserved.Dielectric　elastomer　(DE)　is　a　typical　viscoelastic　soft　material,　which　is　capable　of　giant　deformation　under　an　electric　field　and　can　be　applied　in　broad　temperature　range.　Temperature　can　significantly　affect　the　performance　of　DE.　However,　few　reports　focus　on　the　effect　of　temperature　on　the　electromechanical　deformation.　In　this　study,　the　in-plane　deformation　of　most　widely　used　DE　(VHB　4910,　3M)　under　different　temperatures　is　performed　experimentally.　The　results　show　that　the　deformation　of　the　viscoelastic　DE　increases　with　the　increasing　temperature　and　DE　easily　occurs　electromechanical　instability　at　a　high　temperature.　Subsequently,　based　on　the　thermodynamics,　we　present　a　viscoelastic　model　to　describe　the　electromechanical　deformation　of　DE　under　different　temperatures.　The　numerical　results　show　that　DE　creeps　with　time　due　to　the　viscoelasticity　and　has　bigger　deformation　at　higher　temperature,　which　show　well　consistent　with　the　experimental　results.