Earphone and earphone system

An earphone, comprising:

• a sound emitting part for wearing on a front side of an ear, a main body part for wearing on a back side of the ear, and an ear hanging part connecting the sound emitting part and the main body part,
• wherein the sound emitting part comprises a first housing, a speaker unit, a microphone unit, a camera apparatus and a control module, wherein the speaker unit, the microphone unit, the camera apparatus and the control module are arranged in an inner cavity of the first housing, the first housing is provided with a visual field hole, the camera apparatus is arranged at the visual field hole, and the camera apparatus is configured to be capable of shooting an area in front of a human face when the earphone is in a wearing state,
• the control module comprises a main board, an image processing unit and a main control unit, wherein the main board comprises a first board body, a second board body and a flexible connecting board which are connected in sequence, and the flexible connecting board is bendable to make the first board body and the second board body be arranged at an included angle, and
• the image processing unit is arranged on the first board body, the image processing unit is electrically connected to the camera apparatus to process image data shot by the camera apparatus, and the main control unit is arranged on the second board body.