A label sheet manufacturing device manufacturing a label sheet with the label temporarily attached to a backing sheet (Da) in a detachable manner, wherein a folded portion of the label is formed by folding and protruding an intermediate portion of the label from back surface side to front surface side in a chevron shape, having one side surface and other side surface with an apex portion as a border therebetween, and wherein outer end portions, consecutively provided respectively from a base portion of the one side surface and from a base portion of the other side surface of the folded portion via bent portions, are temporarily attached to the backing sheet (Da) with the folded portion in a protruding state, the label sheet manufacturing device comprising: a label supply unit which supplies planar label; a label holding unit which attracts and holds the label supplied from the label supply unit; characterized in that it comprises a backing sheet conveyance unit which conveys the backing sheet (Da); a folding and temporary attaching unit, wherein a folded portion of the label is formed by folding and protruding a portion of the label from back surface side to front surface side in a chevron shape, having one side surface and other side surface with an apex portion as a border therebetween, wherein outer end portions, consecutively provided respectively from a base portion of the one side surface and from a base portion of the other side surface of the folded portion via bent portions, are temporarily attached to the backing sheet (Da) conveyed by the backing sheet conveyance unit; wherein the backing sheet conveyance unit is configured by a backing sheet reel holding portion which holds the backing sheet reel with the strip form backing sheet (Da) wound around rotatably, and a strip form backing sheet conveyance mechanism which pulls out and conveys the strip form backing sheet (Da) from the backing sheet reel held by the backing sheet holding unit; and wherein the folding and temporary attaching unit is provided with a transferring unit which transfers the label holding unit to the two positions, the attracting and holding position where the label is attracted and held, and the temporary attaching and holding position where the attracted and held label is temporarily attached to the strip form backing sheet (Da); wherein the temporary attaching position is set at a downstream side of the conveying direction of the strip form backing sheet (Da) with regard to the attracting and holding position; and wherein the transferring unit transfers the label holding unit from the attracting and holding position towards the temporary attaching position in an oblique direction. a label supply unit which supplies planar label; a label holding unit which attracts and holds the label supplied from the label supply unit; a backing sheet conveyance unit which conveys the backing sheet (Da); a folding and temporary attaching unit, wherein a folded portion of the label is formed by folding and protruding a portion of the label from back surface side to front surface side in a chevron shape, having one side surface and other side surface with an apex portion as a border therebetween, wherein outer end portions, consecutively provided respectively from a base portion of the one side surface and from a base portion of the other side surface of the folded portion via bent portions, are temporarily attached to the backing sheet (Da) conveyed by the backing sheet conveyance unit; wherein the backing sheet conveyance unit is configured by a backing sheet reel holding portion which holds the backing sheet reel with the strip form backing sheet (Da) wound around rotatably, and a strip form backing sheet conveyance mechanism which pulls out and conveys the strip form backing sheet (Da) from the backing sheet reel held by the backing sheet holding unit; and wherein the folding and temporary attaching unit is provided with a transferring unit which transfers the label holding unit to the two positions, the attracting and holding position where the label is attracted and held, and the temporary attaching and holding position where the attracted and held label is temporarily attached to the strip form backing sheet (Da); wherein the temporary attaching position is set at a downstream side of the conveying direction of the strip form backing sheet (Da) with regard to the attracting and holding position; and wherein the transferring unit transfers the label holding unit from the attracting and holding position towards the temporary attaching position in an oblique direction.