A method of manufacturing an absorbent article includes a first absorption layer-forming step of forming a first absorption layer configuring the absorber, and a second absorption layer-forming step of forming a second absorption layer configuring the absorber, and laminated on to the first absorption layer. In the first absorption layer-forming step, a first absorption layer is formed while forming the curving unit in symmetry with respect to a virtual central line dividing a width of the absorber in the widthwise direction into two, and extending in the longitudinal direction, and in the second absorption layer-forming step, the second absorption layer is formed without providing the curving unit in a crotch region that is adapted to be in contact with a crotch of the wearer.