Disclosed relates to an earphone, comprising a hook portion and a retention portion connected to the hook portion, at least a part of the hook portion is configured to hang between a rear side of an ear of a user and the head of the user, and the retention portion is configured to contact a front side of the ear of the user. In a wearing state, a free end of the retention portion that is not connected to the hook portion extends into a concha cavity of the ear to make the retention portion inclinedly disposed relative to a sagittal axis of the user, which is conducive to increasing a distance between the center of gravity of the retention portion and an upper auricular root of the ear, i.e., to lowering the center of gravity of the retention portion in the wearing state, and thereby improving the stability of the earphone.