A method for manufacturing parts by utilizing TA15 titanium alloy scraps, which is characterized in that: the vacuum non-contact plasma melting is adopted to process the residual block scraps of a TA15 titanium alloy plate, a rod or a forging part after the mechanical processing into powder by argon gas atomization, the powder is vacuum canned in atomized state; the titanium alloy powder is gradually is melted and deposited by layers according to a numeric mould of the part by utilizing the laser till the designed part blank is formed by accumulation; the method for manufacturing parts by utilizing TA15 titanium alloy scraps firstly creatively utilizes the laser melting deposition technology (laser rapid prototyping) to realize the recycling use of the TA15 titanium alloy scraps; furthermore, the qualified part can be manufactured without the need of re-melting, forging and rolling, the textures, the components and the performances of the part are completely same with the part which is prepared by using the qualified finished product material, which can achieve or even exceed the level of the forging part. The utilization ratio of the materials is significantly improved, and the manufacturing cost is greatly reduced, which is only one fourth of the traditional manufacturing process of the prepared part and one half of the cost of the part which is prepared by the qualified finished product material via laser melting deposition.