The　tensile　tests　of　TA7　ELI　alloy　sheet　with　4　mm　thickness　were　performed　by　Gleeble-1500D　machine　at　high　temperatures　and　various　strain　rates.　The　temperature　and　strain　rate　ranges　of　superplastic　deformation　were　obtained,　which　were　verified　by　tensile　test　in　furnace.　In　the　range　of　950-1000　,　the　superplastic　deformation　of　TA7　occurs　when　the　strain　rate　is　lower　than　0.001　s-1.　The　elongation　reaches　260%.　At　the　strain　rate　of　0.001　s-1,　dynamic　recrystallization　occurs　at　800　while　a　lamellar-type　coarse　α　phase　and　grain　growth　appear　in　the　fracture　at　1000　.　With　the　increase　of　temperature,　the　strain　rate　sensitivity　exponent　(m)　and　strain　hardening　exponent　(n)　both　increase.　The　maximum　values　of　m　and　n　are　obtained　at　950　when　the　tension　stiffening　and　high　temperature　softening　behaviors　of　the　material　reach　balance.　©　2020,　Science　Press.　All　right　reserved.