An augmented reality-based file transfer method and a related file transfer system integrated with cloud computing are provided. The file transfer method is applied to file transmission between a first device and a second device wirelessly connected to each other, wherein the first device includes a file, a display unit, and an input unit electronically connected to the display unit. The file transfer method includes the following steps: when an image stored in the first device is opened, displaying the file and the image on the display unit of the first device, wherein the image comprises a face image of the second user; when the file is dragged to the face image of the second user shown in the image via the input unit and is then released, generating a command; and transferring the file from the first device to the second device according to the command.