A manufacturing device of a composite body of a continuous sheet associated with an absorbent article by extending a sheet-like member having four corners across a pair of continuous sheets (20a, 24a) that travels in parallel along a continuous direction and bonding the sheet-like member to the pair of continuous sheets, the device comprising: a holding member that circulates along a circulating trajectory (Tr) having a circular shape about a predetermined rotational axis (cTr), the holding member holding one side of the sheet-like member on a holding surface that faces outward in a radial direction of the circulating trajectory; and a roller member arranged according to a predetermined position (Pout) on the circulating trajectory, an outer peripheral face of the roller member pressing the pair of continuous sheets (20a, 24a) toward the sheet-like member when the holding surface passes the predetermined position (Pout), and thus causing the sheet-like member to be bonded to the pair of continuous sheets and delivered to the pair of continuous sheets from the holding surface, the holding surface including portions that respectively correspond to the four corners of the sheet-like member, each of the portions being a curve surface-like portion along an arc track that is drawn by the each of the portions when passing the predetermined position (Pout), a track that is drawn when at least a part that is arranged between two adjacent curve surface-like portions in a direction along the circulating trajectory (Tr) on the holding surface passes the predetermined position (Pout) being positioned more inwardly in the radial direction (Dr) of the circulating trajectory than the arc track that is drawn when the two adjacent curve surface-like portions passes the predetermined position (Pout), the holding surface sucking and holding the sheet-like member with a suction force, a suction force per unit area of the curve surface-like portion on the holding surface being greater than that of a portion other than the curve surface-like portion on the holding surface. a holding member that circulates along a circulating trajectory (Tr) having a circular shape about a predetermined rotational axis (cTr), the holding member holding one side of the sheet-like member on a holding surface that faces outward in a radial direction of the circulating trajectory; and a roller member arranged according to a predetermined position (Pout) on the circulating trajectory, an outer peripheral face of the roller member pressing the pair of continuous sheets (20a, 24a) toward the sheet-like member when the holding surface passes the predetermined position (Pout), and thus causing the sheet-like member to be bonded to the pair of continuous sheets and delivered to the pair of continuous sheets from the holding surface, the holding surface including portions that respectively correspond to the four corners of the sheet-like member, each of the portions being a curve surface-like portion along an arc track that is drawn by the each of the portions when passing the predetermined position (Pout), a track that is drawn when at least a part that is arranged between two adjacent curve surface-like portions in a direction along the circulating trajectory (Tr) on the holding surface passes the predetermined position (Pout) being positioned more inwardly in the radial direction (Dr) of the circulating trajectory than the arc track that is drawn when the two adjacent curve surface-like portions passes the predetermined position (Pout), the holding surface sucking and holding the sheet-like member with a suction force, a suction force per unit area of the curve surface-like portion on the holding surface being greater than that of a portion other than the curve surface-like portion on the holding surface.