The purpose of the present invention is to make the overall manufacturing equipment for pant-type and T-type disposable diapers more compact and to produce diapers efficiently by keeping waste of materials to a minimum. The diaper manufacturing method is characterized in that: a base material sheet (8) obtained from a continuous sheet material (W) and an elastic member (11) is continuously supplied in a feed direction (A) an absorbent body (5) is attached to the base material sheet (W) in the central portion of the width direction the base material sheet (W) is divided into a pair of waist-encircling sheet portions (9a, 9b) and a single crotch covering sheet portion (10) by two dividing lines (18) along the longitudinal direction of the base material sheet the crotch covering sheet portion (10) is cut at a prescribed length to form individual crotch coverings (6) the crotch coverings (6) are joined one by one alternately to one or the other waist-encircling sheet portion (9a, 9b) the waist-encircling sheet portions (9a, 9b) are cut at an intermediate position between crotch coverings (6) that are adjacent to each other the crotch sections (3) are folded in two and the sections near the two ends of the waist-encircling sections (2) are folded inward and each of said ends is fixed to the free end of the crotch section (3).La présente invention vise à fabriquer la totalité des équipements de fabrication pour des couches jetables de type T et de type culotte plus compactes et à produire des couches efficacement en maintenant à un minimum le gaspillage de matériaux. La présente invention concerne par conséquent un procédé de fabrication caractérisé en ce que : un feuille de matériau de base (8) obtenue dun matériau de feuille continu (W) et dun élément élastique (11) est alimentée en continu dans une direction dalimentation (A) un corps absorbant (5) est fixé à la feuille de matériau de base (W) dans la partie centrale de la direction de la largeur une feuille de matér