The invention relates to a stamping method of an automatic stamping device. The automatic stamping device comprises a frame, a central control unit located in the frame, a material containing part, a stamp module, a counting device, a scanning recognizer, a displayer, a page turnover mechanism, a first mode selection module and a second mode selection module, wherein the material containing part, the stamp module, the counting device, the scanning recognizer, the displayer and the page turnover mechanism are connected with the central control unit, and the first mode selection module and the second mode selection module are fixedly installed in the frame. By means of the automatic stamping device, recognition of a signature of an first trial teacher can be achieved, page turnover and stamping are automatically carried out on materials, and therefore stamping work can be quickly completed, and the working efficiency is improved.