A method for manufacturing an absorbent article, the absorbent article including an absorbent main body, a pair of composite members, and an auxiliary member, the absorbent main body being for absorbing a liquid, the pair of composite members having leg openings and a waist opening, the auxiliary member being provided on each of the composite members, the method comprising: a feeding step of feeding an auxiliary-member continuous body from a roll, the auxiliary-member continuous body being for forming the auxiliary member, the auxiliary-member continuous body being wound around the roll; a first joining step of joining a composite-member continuous body and the auxiliary-member continuous body that has been fed from the roll, the composite-member continuous body being for forming the composite member; a second joining step (Sill) of joining an absorbent-main-body continuous body to the auxiliary-member continuous body and the composite-member continuous body that have been joined in the first joining step, the second joining step (Sill) being performed by forming a joining portion (ja, jb), the joining portion (ja, jb) intersecting a direction of transport, the absorbent-main-body continuous body being for forming the absorbent main body; and a dividing step of dividing the auxiliary-member continuous body at a predetermined position in an intersecting direction, the dividing step being performed between the feeding step and the second joining step (Sill), the intersecting direction being a direction that intersects the direction of transport. the absorbent article including an absorbent main body, a pair of composite members, and an auxiliary member, the absorbent main body being for absorbing a liquid, the pair of composite members having leg openings and a waist opening, the auxiliary member being provided on each of the composite members, the absorbent main body being for absorbing a liquid, the pair of composite members having leg openings and a waist opening, the auxiliary member being provided on each of the composite members, the method comprising: a feeding step of feeding an auxiliary-member continuous body from a roll, the auxiliary-member continuous body being for forming the auxiliary member, the auxiliary-member continuous body being wound around the roll; a first joining step of joining a composite-member continuous body and the auxiliary-member continuous body that has been fed from the roll, the composite-member continuous body being for forming the composite member; a second joining step (Sill) of joining an absorbent-main-body continuous body to the auxiliary-member continuous body and the composite-member continuous body that have been joined in the first joining step, the second joining step (Sill) being performed by forming a joining portion (ja, jb), the joining portion (ja, jb) intersecting a direction of transport, the absorbent-main-body continuous body being for forming the absorbent main body; and a dividing step of dividing the auxiliary-member continuous body at a predetermined position in an intersecting direction, the dividing step being performed between the feeding step and the second joining step (Sill), the intersecting direction being a direction that intersects the direction of transport. a feeding step of feeding an auxiliary-member continuous body from a roll, the auxiliary-member continuous body being for forming the auxiliary member, the auxiliary-member continuous body being wound around the roll; the auxiliary-member continuous body being for forming the auxiliary member, the auxiliary-member continuous body being wound around the roll; a first joining step of joining a composite-member continuous body and the auxiliary-member continuous body that has been fed from the roll, the composite-member continuous body being for forming the composite member; a second joining step (Sill) of joining an absorbent-main-body continuous body to the auxiliary-member continuous body and the composite-member continuous body that have been joined in the first joining step, the second joining step (Sill) being performed by forming a joining portion (ja, jb), the joining portion (ja, jb) intersecting a direction of transport, the absorbent-main-body continuous body being for forming the absorbent main body; and the second joining step (Sill) being performed by forming a joining portion (ja, jb), the joining portion (ja, jb) intersecting a direction of transport, the absorbent-main-body continuous body being for forming the absorbent main body; and a dividing step of dividing the auxiliary-member continuous body at a predetermined position in an intersecting direction, the dividing step being performed between the feeding step and the second joining step (Sill), the intersecting direction being a direction that intersects the direction of transport. the dividing step being performed between the feeding step and the second joining step (Sill), the intersecting direction being a direction that intersects the direction of transport.