It is a method for manufacturing a sheet-like member using a continuous sheet (4a), and the sheet-like member is one associated with an absorbent article (1). The method includes a supplying step, a processing step, and a detecting step. In the supplying step, the continuous sheet (4a) is supplied by transferring the continuous sheet (4a) to a processing section (L4aK) by transporting the continuous sheet (4a) in a direction of transport, and the direction of transport is a direction in which the continuous sheet (4a) continues. The processing step is performed at a predetermined position in the direction of transport, and a portion of the continuous sheet (4a) which is to be the absorbent article 1 is processed by the processing section (L4aK) at an interval in the direction of transport. In the detecting step, a trace of the processing left on the continuous sheet (4a) is detected and a detection result is outputted. In the supplying step, a direction-of-transport tension value of the continuous sheet (4a) at a time of transferring the continuous sheet (4a) to the processing section (L4aK) is adjusted based on the detection result.
