The present invention disclose an apparatus for fastening a digital memory card, including a tray and a card holder, where the tray includes a first groove, configured to accommodate a first digital memory card; and a second groove, disposed perpendicular to the first groove and configured to accommodate a second digital memory card, where the first groove and the second groove have hollowed portions that partially overlap; and the card holder includes a first spring and a second spring, where when the tray is inserted into the card holder, the first spring and the second spring extrude from the hollowed portions. According to the present invention, an apparatus for fastening a digital memory card, which is compatible with a SIM card and an SD card, is implemented, thereby flexibly meeting user requirements of using different cards by using an apparatus for fastening a digital memory card without increasing layout space.