To provide a product carrying-out destination determining method by a cutting machine capable of easily carrying out products according to materials and sizes of the products and device thereof.

The materials and sizes of the products P are inputted from an input means 25, the products P are divided into groups according to the inputted materials and sizes and the groups are registered. A product carrying out destination is assigned to each group and is stored in a storage means 31. A comparing/judging part 33 compares the material/size of the product P to be carried out and the material/size of the registered group. When the materials coincide each other and the sizes are in a prescribed range, the carrying out destination of the group is automatically determined as a product carrying out destination, and thereby a man-hour is reduced and work efficiency can be improved without requiring the input of the carrying out destination every time the product P is inputted by an operator.