A method for manufacturing an absorbent article (1) includes: manufacturing a first-specification absorbent article (1) while transporting materials (absorbent body (2), top sheet material (3), back film material (6), back-nonwoven-fabric-sheet material (7), elastic string (9), etc.) along a transporting route that corresponds to the materials； and switching from manufacturing of the first-specification absorbent article (1) to manufacturing of a second-specification absorbent article (1) by changing a plurality of types of manufacturing conditions at different positions in the transporting route while the transporting of the material is maintained. The plurality of types of manufacturing conditions include: a first manufacturing condition that is changed at a first position in the transporting route； and a second manufacturing condition that is changed at a second position that is downstream of the first position. The switching includes setting timings for changing the manufacturing conditions so that a timing for changing the second manufacturing condition is later than a timing for changing the first manufacturing condition.
