To rapidly supply a large number of bottomed cylindrical bodies and to also reduce production cost in the continuous production of the bottomed cylindrical body by CIP molding.

A method for continuously producing a bottomed cylindrical body by CIP molding consists of three processes. A first process arranges a mandrel to a pressure container 2 having a molding rubber mold provided therein to fill the molding space in the molding rubber mold with a molding powder, and subsequently provides a top punch 11 in the hole part provided to the upper part of the pressure container 2. A second process performs static water pressurization by introduction a pressure medium into the outer peripheral side of the molding rubber mold, while fixing the mandrel 3a and the top punch 11 by a reaction force receiving mechanism, subsequently removes the pressure medium to reduce pressure, and subsequently takes out the mandrel from the pressure container along with a molded object. A third process takes out the molded object from the mandrel 3a. In this case, in parallel to the third process related to the bottomed cylindrical body 12a molded by the first and the second processes, the first and the second processes are executed for molding a next bottomed cylindrical body using the pressure container 2, top punch 11 and reaction force receiving mechanism and other mandrel 3a used in cylindrical body 12a.