The invention relates to an earphone device. The earphone device comprises a left ear shell piece, a battery box, a control box and a right ear shell piece which are electrically connected in sequencethrough wires. The battery box comprises a battery box upper cover and a battery box lower cover which are clamped with each other, the control box comprises a control box upper cover and a control box lower cover which are clamped with each other, the control box is located on the side, close to the right ear shell, of the wire, at least one attaching surface is arranged on the battery box, andthe attaching surface is in an arc shape. The earphone device provided by the invention is convenient for a user to wear during exercise, and the user experience is improved.