A food dough cutting method and cutting device thereof capable of forming conveyed food dough strips that have nearly identical weight per unit time when dividing band shaped food dough into multiple food dough strips in the conveyance direction, and is further capable of performing the same number of cuts for each food dough strip when cutting each food dough strip along the width direction into food dough pieces having a specified weight are provided. The conveyed food dough is aligned to a position that is displaced by just an alignment displacement amount with respect to a reference position that is based on the installation position of cutting members. The alignment displacement amount is calculated based on the ratio of the width dimension of the food dough and the lengths of food dough pieces that are cut from food dough strips on both sides.
