A dustcover device for protecting an optical disk drive (20) having a tray (22) includes a bezel (30), a dustcover member (40) and a coil spring (50) mounted to between the bezel and the dustcover member for driving the dustcover to move upwardly to an upper position vertically. The bezel defines an opening (320) and a plurality of receiving grooves (324). The dustcover member comprises a dustcover (42) movably mounted to the bezel and a frame (44). The frame is rotatablely attached to the bezel, for driving the dustcover to slide downwardly to a lower position along the receiving grooves of the bezel. When the dustcover is in the upper position, the dustcover is received in the opening of the bezel. When the dustcover is in the lower position, the opening is open for the tray sliding into or out of the bezel.