There is described a printing system, which includes a plurality of printers and a user terminal device, while makes it possible to easily and securely specify a printer desired by the user. The user terminal device is provided with: a command transmitting section that transmits the printer retrieving command to the plurality of printers; a command judging section that determines whether or not specific information is attached to the printer-retrieving command response; and a display controlling section to display the specific printer in a recognizable manner on a printer selecting screen. Each printer is provided with: a command processing section that determines whether or not the user information added to the printer retrieving command coincides with the other user information inputted and stored in advance; and a command responding section that transmits the printer-retrieving command response to the user terminal device, when the two user information coincide with each other.