The utility model provides a new device, which can wipe a cassette recorder magnetic head and a leading tape guide wheel cleanly and automatically. The device is characterized in that both ends (blank space without magnetic powder) of tapes of an ordinary box type cassette are changed into two sections of cleaning tapes. When the cassette works, the cleaning tapes at both ends keep certain contact pressure with the magnetic head and the leading tape guide wheel as the cassette, magnetic powder and grime bonded on the magnetic head and other components are cleaned automatically, and thereby, the recorder keeps clear for a long time.