The invention discloses a control method, a device and a system of an automatic stamping machine, and belongs to the technical field of computers. The control method is applied to the automatic stamping machine. The automatic stamping machine comprises a supporting part, a moving mechanism and a first camera shooting device. The control method comprises the following steps that when an image acquisition instruction is received, the first camera shooting device is controlled to shoot a file borne on the supporting piece to obtain a first target image, and the first target image is uploaded to an upper computer; a stamping instruction which is sent by the upper computer and carries the stamping position information is received, and the stamp position information in the first target image isthe coordinate information of the selected area or the selected position in the first target image; the moving mechanism is controlled to drive a target seal to stamp on the file according to the stamping position information; and the problem that the precision of the stamping is poor by utilizing the intelligent stamping system in the related technology is solved.