To provide a piling method and its device, preventing damage to blank materials, reducing noises and being applicable to high speed operation (high productivity).

The piling method comprises a receiving step of receiving the blank materials subjected to blanking machining at a reception position on a first conveyor, a first conveyor carrying step of intermittently carrying the blank materials, a delivering step of delivering the blank materials with its lower faces adapted to be held by a second conveyor to a reception position on a second conveyor provided above a delivery position on the first conveyor, a second conveyor carrying step of intermittently carrying the blank materials while synchronizing the second conveyor with the first conveyor, and a releasing and piling step of releasing the blank materials at a sweep-out position on the second conveyor and piling the blank materials in sequence while dropping the blank materials.