A media file sharing method and a media file sharing system are provided. The sharing method comprises: presetting and saving an LAN, a DLNA application and a media file that are default during a sharing process; establishing a sharing pair relationship between a master device and a slave device in the DLNA application; generating an NFC triggering label embedded in the master device according to the LAN, the DLNA application, the media file and the sharing pair relationship; activating the NFC triggering label by the master device through an NFC sensing operation; the master device and the slave device logging into the LAN and the DLNA application that are default according to the NFC triggering label and completing the sharing pairing according to the sharing pair relationship; receiving the media file from the master device by the slave device and completing processing of the media file.