To provide a marking device and method that can continuously mark a prescribed drawing pattern in a not-blurred state and that can increase productivity, even with a subject-of-marking that is continuously conveyed.

A marking device for marking a drawing pattern on a subject-of-marking includes: a conveyance part for continuously conveying the subject-of-marking in a first direction; a marking unit first moving part for moving a marking unit in the first direction and a marking unit second moving part for moving the marking unit in a second direction; and a marking position correcting part. The marking device is provided with an integrated control unit for controlling a marking position overlap control part and a synchronous movement control part, and while the subject-of-marking is continuously conveyed in the first direction, for emitting marking light-rays for a prescribed amount of time at the same position on the subject-of-marking in the first direction and the second direction. There is provided a method for marking.