The present invention discloses an earphone and a method for making an earphone to achieve automatic identification and switch control. The earphone comprises: a voltage-controlled switch, a switch button set, a microphone and more than two earphone remote control circuits, wherein different earphone remote control circuits correspond to different smartphone operating systems, respectively; the voltage-controlled switch is arranged between the switch button set, the microphone and the more than two earphone remote control circuits, and the voltage input terminal of the voltage-controlled switch is connected to the microphone-connected terminal of the earphone; the voltage-controlled switch identities the operating system of the smartphone that the earphone is plugged in according to the voltage of the microphone-connected terminal of the earphone, and then controls switch(es) in itself to switch to a corresponding earphone remote control circuit, to achieve the connection of the switch button set and the microphone to the corresponding earphone remote control circuit. The technical solution of the present invention makes one earphone generally applicable to the mobile phones of different operating systems.