The invention discloses a file transfer method and device and belongs to the technical field of file transfer. The method comprises the steps that a server receives a file uploading request sent by a user side, wherein the file uploading request comprises the message digest value, which is used for identifying an uploaded file in a unique mode, of an uploaded file; the server generates downloading information corresponding to the uploaded file, wherein the downloading information is used for indicating the storage position of the uploaded file in the server and comprises extraction identification or an extraction link or two-dimension codes; the server returns the downloading information to the user-side so as to bring convenience to the user-side to obtain the downloading information from the user-side, and downloads the downloading information to the uploaded file from the server according to the downloading information. The file transfer method and device realize file transfer without accounts in real time in a terminal-striding mode and in a mode that a file sharing application program does not need installing on a terminal, and enable file transfer to be more convenient and timely.