According to various examples of the present invention, an electronic device including a speaker can comprise: a first housing; a second housing located in an inner space of the first housing and accommodating a speaker; a separation means for separating the inside of the second housing into a first space opened to the outside of the second housing in the front surface direction of the speaker and a second space in the rear surface direction of the speaker; and opening formed in the separation means and allowing the first space to communicate with the second space; and a separation member coupled to the opening, and having a sound blocking function between the first space and the second space while enabling air permeation between the first space and the second space. Other examples are possible.