An electronic device comprising: a first housing comprising a first display device and a first connection unit comprising a first protrusion; a second housing comprising a second display device and a second connection unit comprising a second protrusion, the second housing being coupled to the first connection unit to be movable in a predetermined direction; a circular plate comprising a spiral recess, the circular plate being coupled to the first protrusion in a first region of the spiral recess and being coupled to the second protrusion in a second region of the spiral recess spaced apart from the first region, wherein the circular plate is configured to be rotatable to move the first protrusion and the second protrusion such that, by rotation of the circular plate, the first protrusion and the second protrusion move in the predetermined direction along the spiral recess to adjust a distance between the first housing and the second housing; and a first cover facing a first face of the electronic device and disposed to enclose at least a portion of the first connection unit and the second connection unit, wherein the first cover comprises: at least one guide (421a, 421b) formed in the first cover and configured to guide a movement of the first connection unit or the second connection unit, and a stopper (422a, 422b) disposed to be spaced apart from the guide (421a, 421b) and configured to limit the movement of the first connection unit or the second connection unit characterized in that said guide is a groove formed in one face of said first cover facing the first connection unit or the second connection unit. a first housing comprising a first display device and a first connection unit comprising a first protrusion; a second housing comprising a second display device and a second connection unit comprising a second protrusion, the second housing being coupled to the first connection unit to be movable in a predetermined direction; a circular plate comprising a spiral recess, the circular plate being coupled to the first protrusion in a first region of the spiral recess and being coupled to the second protrusion in a second region of the spiral recess spaced apart from the first region, wherein the circular plate is configured to be rotatable to move the first protrusion and the second protrusion such that, by rotation of the circular plate, the first protrusion and the second protrusion move in the predetermined direction along the spiral recess to adjust a distance between the first housing and the second housing; and a first cover facing a first face of the electronic device and disposed to enclose at least a portion of the first connection unit and the second connection unit, wherein the first cover comprises: at least one guide (421a, 421b) formed in the first cover and configured to guide a movement of the first connection unit or the second connection unit, and a stopper (422a, 422b) disposed to be spaced apart from the guide (421a, 421b) and configured to limit the movement of the first connection unit or the second connection unit characterized in that said guide is a groove formed in one face of said first cover facing the first connection unit or the second connection unit. at least one guide (421a, 421b) formed in the first cover and configured to guide a movement of the first connection unit or the second connection unit, and a stopper (422a, 422b) disposed to be spaced apart from the guide (421a, 421b) and configured to limit the movement of the first connection unit or the second connection unit characterized in that said guide is a groove formed in one face of said first cover facing the first connection unit or the second connection unit.