An object is to provide a casting device that is capable of maintaining depressurization in a cavity. A casting device (1) is configured to move an extrusion pin (3), slidably inserted in an insertion hole (29) formed in a mold (2), into a cavity (20) in the mold to release a casted product. The casting device (1) includes a depressurized space creator (4) configured to create a depressurized space (40) on a reverse side of a cavity surface to define the cavity (20). The depressurized space creator (4) covers an opening of the insertion hole (29) to maintain depressurization in the cavity (20).