A method of manufacturing a pneumatic tire, comprising the steps of: forming a primary molded body by fitting bead rings on opposite ends, in a width direction, of a cylindrical-shaped body in which at least a carcass material is mounted on an outer peripheral side of a film formed of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer; expanding and deforming the primary molded body to the outer peripheral side by extending a pressing plate against the inner peripheral surface of the primary molded body, so that the bead rings are moved so as to be closer to each other; setting the primary molded body so as to be sucked and held to an inner peripheral surface of a transfer-holding mold; inserting a cylindrical-shaped rigid inner mold including multiple divided bodies into the inside of the primary molded body, the rigid inner mold including divided bodies plurally divided in the circumferential direction and further divided in half in the width direction of the cylindrical-shaped peripheral surface; out of the resultant divided bodies moving first those on one side in the width direction around a rotation mechanism as the rotation center in a radially-outward direction, then moving the divided bodies on the other side, so that they are attached to the primary molded body in an annular shape, such that the rigid inner mold is inserted inside the primary molded body; stopping suction by the transfer-holding mold, and transferring the primary molded body to an outer peripheral surface of the rigid inner mold; turning up opposite ends of the carcass material in a width direction thereof on the rigid inner mold, while other tire constituting members are being stacked on an outer peripheral surface of the primary molded body so that a green tire is molded; detaching the rigid inner mold from the green tire; disposing the green tire inside of a curing mold installed in a curing apparatus, and heating the curing mold to a predetermined temperature; and pressurizing the film from an inner peripheral side to inflate the film while heating the curing mold to cure the green tire, and bringing the film into close contact with and bonded to an inner peripheral surface of the tire. forming a primary molded body by fitting bead rings on opposite ends, in a width direction, of a cylindrical-shaped body in which at least a carcass material is mounted on an outer peripheral side of a film formed of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer; expanding and deforming the primary molded body to the outer peripheral side by extending a pressing plate against the inner peripheral surface of the primary molded body, so that the bead rings are moved so as to be closer to each other; setting the primary molded body so as to be sucked and held to an inner peripheral surface of a transfer-holding mold; inserting a cylindrical-shaped rigid inner mold including multiple divided bodies into the inside of the primary molded body, the rigid inner mold including divided bodies plurally divided in the circumferential direction and further divided in half in the width direction of the cylindrical-shaped peripheral surface; out of the resultant divided bodies moving first those on one side in the width direction around a rotation mechanism as the rotation center in a radially-outward direction, then moving the divided bodies on the other side, so that they are attached to the primary molded body in an annular shape, such that the rigid inner mold is inserted inside the primary molded body; stopping suction by the transfer-holding mold, and transferring the primary molded body to an outer peripheral surface of the rigid inner mold; turning up opposite ends of the carcass material in a width direction thereof on the rigid inner mold, while other tire constituting members are being stacked on an outer peripheral surface of the primary molded body so that a green tire is molded; detaching the rigid inner mold from the green tire; disposing the green tire inside of a curing mold installed in a curing apparatus, and heating the curing mold to a predetermined temperature; and pressurizing the film from an inner peripheral side to inflate the film while heating the curing mold to cure the green tire, and bringing the film into close contact with and bonded to an inner peripheral surface of the tire.