An output method and an output device are provided. The output method includes the following steps. A first electronic device sends a file to a server and generates a piece of verification information corresponding to the file. A second electronic device receives the piece of verification information and displays the piece of verification information on screen. An output device reads the piece of verification information displayed by the second electronic device, and obtains the file from the server according to the piece of verification information so as to output a paper document of the file.