An electronic device is provided. The electronic device includes a housing including a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface surrounding at least a part of a space between the first surface and the second surface, an opening formed on at least one of the first surface, the second surface, or the side surface, a first channel extended from the opening, a second channel connected to at least a part of the first channel and extended to an inner space of the housing, an audio mounted inside the housing and connected to the opening through the first channel, a first member inserted into the first channel, and a second member inserted into the second channel, for allowing and restricting introduction and discharge of air into and from the inner space of the housing.