It is difficult to repair the aero-engine titanium alloy blade when it is damaged after the service, so it is important to use the laser deposition technology to deep repair the titanium alloy blade. In this experiment, the mechanical properties of the repaired samples were tested by selecting reasonable laser deposition parameters. The results show that the room temperature tensile properties and the high fatigue properties of the repaired blades are comparable to those of the same batch of forgings, and the deformation of the repaired blades is 0.130.37 mm, which meets the design requirements.