A pizza base shaping tool and a pizza base shaping method are provided that are capable of simply shaping a thin circular plate-shaped pizza base using sliced bread pieces. The pizza base shaping tool includes: a die receiver which serves as a seat a cutting die which presses and shapes the bread piece and a circular slipping sheet which is disposed between the die receiver and the cutting die, wherein the die receiver includes a disk-shaped placement base for placing the bread piece thereon, the cutting die includes a pressing plate which compresses the bread from the upside and a cutting die blade which is provided so as to protrude in a direction perpendicular to a pressing surface of the pressing plate and is used to cut the bread piece into the predetermined diameter, and the slipping sheet is positioned to the bread piece placed on the placement base.
