Disclosed is a wireless earphone charging adapter capable of charging a rechargeable battery of a wireless earphone using the power source from a reproducing device. The wireless earphone charging adapter comprises an adapter connection terminal detachably connected to a main body connection terminal electrically connected to a power source of the main body, a charging terminal electrically connected with the adapter connection terminal, wherein a terminal of the rechargeable battery of the wireless earphone is detachably connected with the charging terminal, and a housing securing the adapter connection terminal and the charging terminal. The housing is formed with a placing groove, within which the wireless earphone is placed so that the terminal of the rechargeable battery of the wireless earphone can remain in the state of being connected with the charging terminal.