While the long and large food dough is being transferred to a downstream conveyor (71) provided adjacent to a weighing conveyor (69), the long and the large food dough is cut by a cutting device (73) provided between the weighing conveyor (69) and the downstream conveyor (71) at a timing when a weight of the long and large food dough measured in advance on the weighing conveyor (69) is reduced by a given weight. In this method, with one side portion of the long and large food dough held by a dough holding member (99) provided between the weighing conveyor (69) and the downstream conveyor (71) to be reciprocable in directions to contact and separate from the long and large food dough, the long and large food dough is cut from another side portion of the long and large food dough by a cutting blade (103) provided opposed to this dough holding member (99).