Push-pull　low　cycle　fatigue　behaviour　has　been　studied　at　room　temperature　in　a　Ti-48Al-2Mn-2Nb　alloy　produced　by　centrifugal　spray　deposition　(CSD).　The　results　have　revealed　that　the　available　cyclic　strain　ranges　are　very　narrow,　which　is　ΔΕt/2　=　0.1-0.25　pct,　and　no　cyclic　hardening　and　softening　behaviour　has　been　observed　during　the　fatigue　process.　Low　cycle　fatigue　lifetime　is　very　sensitive　to　the　cyclic　strain　amplitude,　and　decreases　drastically　with　the　increasing　of　cyclic　strain　amplitude.　Slip　bands　on　the　surface　of　specimens　and　substructures　of　different　dislocation　configurations,　stacking　faults　and　twins　inside　the　specimens　have　been　evaluated　and　found　to　vary　with　the　cyclic　strain　amplitude.　Typical　fracture　surface　characteristics　include　the　translamellar　and　interlamellar　fracture,　cleavage-like　failure　and　secondary　cracks.　Lamellar　structure　has　a　great　effect　on　fatigue　crack　propagation.