An electronic device comprises: a hinge structure which is arranged in an internal space of a hinge cover and includes a first hinge plate having a first opening and a second hinge plate having a second opening; a first housing connected to the first hinge plate; a second housing connected to the second hinge plate; a flexible display arranged to be supported by the first housing and the second housing; and a wiring member which electrically connects a first electrical structure of the first housing to a second electrical structure of the second housing through the internal space of the hinge cover, wherein the wiring member comprises: a bendable portion; a first fixing portion which is disposed on the first opening of the first hinge plate from the bendable portion so as to be exposable; a second fixing portion which is disposed on the second opening of the second hinge plate from the bendable portion so as to be exposable; at least one first reinforcing member which is fixed on the first fixing portion and is arranged to be supported by the first hinge plate between the first hinge plate and the first housing; and at least one second reinforcing member which is fixed on the second fixing portion and is arranged to be supported by the second hinge plate between the second hinge plate and the second housing.