According to the tensile properties of typical aerospace materials of TC11 titanium alloy, the stress-strain relationship was studied with the quasi-static tensile test on different strain rates and the tensile fracture morphology were analyzed with SEM. The experimental results showed that the TC11 titanium alloy had certain strain rate sensitivity. During quasi-static tension, the TC11 titanium alloy specimen had the phenomenon of neck shrinkage, and its fracture belonged to ductile fracture, but its plasticity was poor. The tensile fracture morphology of TC11 titanium alloy was mainly the dimple, but with the increase of strain rate, the fracture surface produced a small number of tearing edges and quasi-cleavage plane, and the fracture mechanism of the specimen was mainly ductile fracture and quasi-cleavage fracture.