To provide a product sheet storage device for laminating and storing product sheets each with one set-off sheets accurately held therebetween, preventing damage and deformation during carriage and saving an installation space.

A product sheet storage device for laminating and storing product sheets with set-off sheets held therebetween includes a product sheet carry- out means 7 on which a carrying conveyor 5 and a pair of carry-out rollers 6 for the product sheets 2 are installed at the upstream side of a product sheet laminating and storing part 8, and a set-off sheets supply means 17 on which a set-off sheets stocker 10 provided with an up-and-down movable lifter 12, a pickup roller 13 for picking up the set-off sheets 11 one by one and a pair of supply rollers 16 for supplying the picked-up set-off sheets 11 are installed at the downstream side of the product sheet laminating and storing part 8. The product sheet carry-out means 7 and the set-off sheets supply means 17 are alternately operated for laminating and storing the product sheets with the set-off sheets 11 held therebetween.