The present invention shortens the molding cycle when using a pair of parison sheets to produce a hollow container. The present invention is a device that is for producing a hollower container, that uses a pair of parison sheets (P, P) to produce the hollow container, and that is characterized by the provision of: a pair of molding dies (2, 3); an intermediate frame (1A) that is clamped by the molding dies (2, 3); and a conveyance unit (5) for conveying the pair of parison sheets (P, P), which are individually held on both sides of the intermediate frame (1A), together with the intermediate frame (1A) between the molding dies (2, 3).