To solve such problems that lubricant is taken out under state of sticking a part thereof on a formed product after working and removed with processes of a shot-blasting and a pickling, but in the shot-blasting process, the good surface roughness is not obtained, and in the pickling process, the product surface is corroded, and the product strength and corrosion resistance are damaged.

A producing method of the metallic parts has at least a process, in which after forging the metallic parts by using the lubricant having the lubricating function at the working temperature of a blank and losing at not lower than the working temperature, the metallic parts after forming, are heated at not lower than the working temperature and decomposed and removed, and a process, in which the crystal structure of the metallic parts is controlled.