A stamping device includes a stamping data generator configured to create stamping data to form a stamp image on a surface of a processing target, a positioning data generator configured to create positioning data to position the processing target, and a controller configured or programmed to control an operation of the processing tool. The controller includes a first controller configured or programmed to control the processing tool such that stamping is performed, based on the positioning data at a first stamping energy, on the processing target including a protective sheet attached thereto in a predetermined area including a stamping area where the stamp image is to be formed, and a second controller configured or programmed to control the processing tool such that stamping is performed, based on the stamping data at a second stamping energy equal to or different from the first stamping energy, on the processing tool in a state of having the protective sheet peeled off therefrom.