According to various embodiments of the present invention, an electronic device comprises: a heating unit, which includes a lower heating unit and an upper heating unit rotatably coupled to the lower heating unit, and heats an external electronic device mounted on at least one surface of the lower heating unit; a fixing unit, which is disposed to be adjacent to the lower heating unit, and has at least one part formed to be movable in the longitudinal direction of the lower heating unit, thereby fixing the external electronic device; a adsorption unit having one part, which is inserted into at least one recess formed on the upper heating unit, and adsorbing at least a region of the external electronic device; and a driving unit, which is disposed at one side or a surrounding part of the heating unit, can move in the direction perpendicular to the moving direction of the fixing unit, and rotates the upper heating unit by pressurizing the same.