An electronic device is provided. The electronic device includes a first housing structure; a second housing structure; a hinge cover; a hinge structure rotatably connecting the first housing structure and the second housing structure; a printed circuit board crossing the hinge structure and extending from an inside of the first housing structure to an inside of the second housing structure via a first metal opening and a second metal opening and the flexible printed circuit board including fixed portions and a flexible portion between the fixed portions, and wherein the hinge structure includes: a first flexible material member attached adjacent to the first metal opening; and a second flexible material member attached adjacent to the second metal opening, and wherein the first flexible material member and the second flexible material member are configured to prevent direct contact between the hinge structure and the flexible printed circuit board during folding and/or unfolding of the electronic device.