Battery charging protection circuit and charging earphone

The invention discloses a battery charging protection circuit and a charging earphone. The battery charging protection circuit comprises a charging control module, a first isolation module, a second isolation module and a third isolation module, wherein the charging control module is used for charging a battery and outputting a charging signal under the condition that an external power supply is switched on; the first isolation module is used for acquiring a charging signal and isolating a battery from an electrical load according to the charging signal; the second isolation module is used for acquiring the charging signal and outputting a conduction signal according to the charging signal; and the third isolation module is used for acquiring the conduction signal and connecting the charging control module and the electrical load according to the conduction signal. The first isolation module isolates the battery from an electrical load when the battery is charged, so that the service life and the safety of th