Provided is a manufacturing method for absorbent products that has a process for placing on connected rectangular flaps that are continuously conveyed on a flap line fastening members (40a, 40b) that are fastenable on both sides to prescribed areas near center line (C) that is parallel to the MD-direction, a process for forming a cutable line (50) along the center line (C) that can divide the connected flaps (130) in two, a process for forming flaps (30) by cutting the connected flaps (130) along the CD-direction on the flap line, and a process for placing the flaps (30) on connected front torso-surrounding member or back torso-surrounding member (120a) or (120b) on the main body line so that center line (C) is orthogonal to the MD-direction of the main body line.
