The invention discloses a method and device for detecting a wearing state of an earphone. The detection method comprises the steps of obtaining state data collected by a first acceleration sensor anda second acceleration sensor, wherein the first acceleration sensor is arranged on a first earphone module of the headset, and the second acceleration sensor is arranged on a second earphone module ofthe headset; determining a datum line included angle between the datum line of the first earphone module and the datum line of the second earphone module according to the state data; judging whetherthe datum line included angle is within a preset range or not; and if yes, judging that the wearing state of the headset is a neck wearing state. Whether the headset is worn on the neck or not can beidentified. The invention also discloses a device for detecting the wearing state of the earphone, and the device has the above beneficial effects.