To provide a manufacturing method of a metallic part capable of easily working titanium or titanium alloy at a low cost and forming the metallic part having a light weight, high toughness and good corrosion resistance.

In the manufacturing method of the metallic part to manufacture the metallic part constituting a fishing gear or sport goods of titanium or titanium alloy, by a prescribed forming method requiring post-working, the method is provided with a first process to form a work W of a prescribed shape of titanium or titanium alloy, a second process to hydrogenate the formed work to be brittle, a third process to finish by machining the work made brittle in the second process and a fourth process in which a member finished to a final shape in the third process is dehydrogenated and is returned to an initial state hardness and is formed to the metallic part as a completed body.