Disclosed is an earphone including: a flexible portion, a housing portion, an earhook portion, and a speaker. In a wearing state, the housing portion includes an inner face facing a user, an outer face away from the user, and a side face connecting the inner face and the outer face. The flexible portion is located on the side face. A small portion of the flexible portion abuts against the cavum conchae wall in the wearing state of the earphone. The flexible portion is a soft structure with elasticity, which deforms relative to the cavum conchae wall under a wearing pressure, increases an area abutting against the cavum conchae wall, reduces a pressure of the earphone squeezing the cavum conchae wall, thereby improving the wearing comfort. Furthermore, the elastic deformation of the flexible portion also adapts to the cavum conchae of different shapes and sizes for different populations.