To provide a cylindrical body manufacturing method capable of realizing the precise shape transfer at a low cost by adequately controlling a stock material to be extruded while being plastically deformed.

The cylindrical body manufacturing method is a cold forging process in which a substantially columnar material 3 having one end 1 and the other end 2 separated from each other in the axial direction is prepared, and the material 3 is plastically deformed step by step while placing the material in various kinds of dies. A cylindrical body 4 formed by this process has first and second contracted stage parts 5, 6 with the contour of the material 3 being finely contracted, and a flanged part 7 protruded in the radial direction of the material 3.