The　microstructure　and　mechanical　properties　of　the　alloy　Ti-Al-Sn-Zr-Mo-Nb-Ta-Si-C-Er　forged　at　different　temperature　were　discussed.　The　microscopic　observation　showed　that　both　forged　alloys　consisted　of　basket　weave　structure,　the　alloy　forged　at　1000　degrees　C　had　some　lamellar　alpha　phase　turning　to　equiaxed　alpha　phase,　and　its　alpha　lamellae　was　finer　than　that　forged　at　1050　degrees　C,　which　coincided　with　the　theoretical　expectation.　The　mechanical　properties　at　room　temperature　and　650　degrees　C　were　measured,　and　the　results　showed　that　the　forged　alloy　at　1000　degrees　C　possessed　better　mechanical　properties.　Compared　with　the　alloy　at　1050　degrees　C,　the　alloy　forged　at　1000　degrees　C　has　a　high　strength　and　slightly　better　elongation.　The　result　showed　that　with　the　decrease　of　forging　temperature,　the　strength　and　ductility　increase,　the　size　of　alpha　lamella　reduces,　and　the　number　of　equiaxed　alpha　phase　increases.　The　excellent　comprehensive　mechanical　properties　of　the　alloy　are　obtained　by　forging　at　1000　degrees　C.