A headphone capable of preventing foreign substances, dust and the like from entering a housing and of enhancing acoustic characteristics in which a hanger of a headband in a housing having a speaker unit is of a storage type and the housing can be swung in a driving direction or a twist direction with respect to the headband, includes an opening provided between the housing and the headband that is blocked by a shielding plate formed on one side of the hanger and a protruded portion formed on the side opposite to the shielding plate.