PROBLEM TO BE SOLVED: To automate the treatment for shortening the length of a connected packaging product in a connection direction.SOLUTION: There is provided a method of producing a connected packaging product in which a plurality of individual packaging products having individually-packaged absorbent articles are connected. The method includes: converting the conveyance direction of the connected packaging product from the connecting direction of the individual packaging product to a width direction crossing with the connecting direction and the thickness direction of the individual packaging product and forming the folding part on the area of the connected packaging product between the absorbent articles adjacent in the connecting direction by the folding part-forming portion disposed at a prescribed position in the connecting direction while conveying the connected packaging product in the width direction.SELECTED DRAWING: Figure 3