The invention relates to devices, an application system and an application method for digitally stamping electronic tickets. The system comprises at least one stamping device and a mobile device, wherein the stamping device is provided with a unique identifier, at least one electronic ticket is stored in the mobile device, ticket information and at least one verification code are recorded in the electronic ticket, and the mobile device utilizes an application interface to open a specific electronic ticket in order to display the ticket information of the electronic ticket on the image of a touch screen; when touching the touch screen of the mobile device, the stamping device receives the unique identifier and stamp information from the stamping device via a short-range communication module, and if the mobile device verifies that the unique identifier of the stamping device is identical to the verification code of the opened electronic ticket, the application interface generates the stamp information on the ticket information of the electronic ticket.