An electronic device, comprising: a first housing; a second housing; a hinge structure connecting the first housing and the second housing in a foldable manner; a flexible display that comprises a first region corresponding to the first housing, a second region corresponding to the second housing and a folding region corresponding to the hinge structure; a first protection cover disposed on the first housing to cover a periphery of the first region of the flexible display; a second protection cover disposed on the second housing to cover a periphery of the second region of the flexible display; and a protection structure disposed on the hinge structure, wherein the protection structure comprises: a blocking member to cover the periphery of the flexible display in the folding region and to bend corresponding to the foldable manner; and at least one protective cap to support the blocking member, covering the periphery of the flexible display in the folding region, the at least one protective cap comprising: a base fixed to the hinge structure in the folding region; a protrusion extending upward from the base and having a first width; and a support part extending from the protrusion toward the flexible display, wherein the support part supports at least a portion of the blocking member and has a second width less than the first width. a first housing; a second housing; a hinge structure connecting the first housing and the second housing in a foldable manner; a flexible display that comprises a first region corresponding to the first housing, a second region corresponding to the second housing and a folding region corresponding to the hinge structure; a first protection cover disposed on the first housing to cover a periphery of the first region of the flexible display; a second protection cover disposed on the second housing to cover a periphery of the second region of the flexible display; and a protection structure disposed on the hinge structure, wherein the protection structure comprises: a blocking member to cover the periphery of the flexible display in the folding region and to bend corresponding to the foldable manner; and at least one protective cap to support the blocking member, covering the periphery of the flexible display in the folding region, the at least one protective cap comprising: a base fixed to the hinge structure in the folding region; a protrusion extending upward from the base and having a first width; and a support part extending from the protrusion toward the flexible display, wherein the support part supports at least a portion of the blocking member and has a second width less than the first width. a blocking member to cover the periphery of the flexible display in the folding region and to bend corresponding to the foldable manner; and at least one protective cap to support the blocking member, covering the periphery of the flexible display in the folding region, the at least one protective cap comprising: a base fixed to the hinge structure in the folding region; a protrusion extending upward from the base and having a first width; and a support part extending from the protrusion toward the flexible display, wherein the support part supports at least a portion of the blocking member and has a second width less than the first width. a base fixed to the hinge structure in the folding region; a protrusion extending upward from the base and having a first width; and a support part extending from the protrusion toward the flexible display, wherein the support part supports at least a portion of the blocking member and has a second width less than the first width.