File transfer method and related device, and transfer system

Embodiments of the invention disclose a file transfer method and a related device, and a transfer system. The method comprises the following steps that a first terminal obtains a first fingerprint, which is input in a fingerprint identification region of the first terminal by a user; the first terminal receives an encryption request message, which is sent by a second terminal and carries a file identification and a second fingerprint; the first terminal utilizes the first fingerprint and the second fingerprint to encrypt a file to obtain a secondary encryption file; and the first terminal sends the secondary encryption file to the second terminal. The embodiments of the invention are beneficial for improving the security for file transfer.