In manufacturing a pleated stretchable composite member, a first sheet-like nonwoven fabric and a stretched cord-like elastic member (rubber thread, etc.) are positioned on the protruding surface side of a pattern roll, and a hot melt adhesive is intermittently applied to the stretched cord-like elastic member and the first sheet-like nonwoven fabric at locations where the protruding surface of the pattern roll is present, and then the stretched cord-like elastic member and the first sheet-like nonwoven fabric intermittently coated with the adhesive and a second sheet-like nonwoven fabric are integrally adhesively fixed at positions corresponding to locations where the protruding surface of the pattern roll is present. In the stretchable composite member, the valleys of the upward-facing breathers of the top-layer nonwoven sheet and the valleys of the downward-facing breathers of the bottom-layer nonwoven sheet are adhesively fixed via a stretchable elastic members (rubber threads) between the two nonwoven fabric sheets.
