An apparatus for manufacturing absorbent articles, said apparatus comprising: a workpiece disposition mechanism that disposes a workpiece which is a constituent element constituting a part of an absorbent article on a sheet-shaped continuous web on which an elastic member expanded in a conveyance direction of the web and in a cross direction crossing the conveyance direction is disposed; and a web position guiding mechanism that guides a position of the web, wherein the workpiece disposition mechanism comprises a rotary drum having a suction unit sucking the workpiece; the suction unit is constituted so as to suck the workpiece at a reception point of the work, change a disposition direction of the workpiece from a first disposition direction of the workpiece at the reception point to a second disposition direction of the workpiece at a delivery point of the workpiece onto the web while the rotary drum is rotated, and dispose the workpiece sucked by the suction unit onto the web, in a cross section taken along the second disposition direction of the suction unit at the delivery point, an external shape of the workpiece sucked by the suction unit is an external shape in which an outer edge portion of the workpiece is close to a rotary shaft side of the rotary drum in comparison with a central portion of the workpiece, and the web position guiding mechanism is a guiding mechanism in which at an abutment point on an upstream side in a conveyance direction more than the delivery point, the web is disposed so that a central portion of the workpiece and the web come into contact with each other and an outer edge portion of the workpiece is spaced from the web, and at the delivery point, the web is disposed so that an outer edge portion of the workpiece and the web come into contact with each other, the apparatus further comprising a web position adjustment mechanism disposed on an upstream side in a conveyance direction of the web more than the abutment point and adjusting a position in a cross direction of the web, wherein the web position adjustment mechanism has: a sensor that detects position information of the cross direction of each detection target portion set on the web; and an adjustment mechanism that adjusts a position in a cross direction of the web, based on the positional information. a workpiece disposition mechanism that disposes a workpiece which is a constituent element constituting a part of an absorbent article on a sheet-shaped continuous web on which an elastic member expanded in a conveyance direction of the web and in a cross direction crossing the conveyance direction is disposed; and a web position guiding mechanism that guides a position of the web, wherein the workpiece disposition mechanism comprises a rotary drum having a suction unit sucking the workpiece; the suction unit is constituted so as to suck the workpiece at a reception point of the work, change a disposition direction of the workpiece from a first disposition direction of the workpiece at the reception point to a second disposition direction of the workpiece at a delivery point of the workpiece onto the web while the rotary drum is rotated, and dispose the workpiece sucked by the suction unit onto the web, in a cross section taken along the second disposition direction of the suction unit at the delivery point, an external shape of the workpiece sucked by the suction unit is an external shape in which an outer edge portion of the workpiece is close to a rotary shaft side of the rotary drum in comparison with a central portion of the workpiece, and the web position guiding mechanism is a guiding mechanism in which at an abutment point on an upstream side in a conveyance direction more than the delivery point, the web is disposed so that a central portion of the workpiece and the web come into contact with each other and an outer edge portion of the workpiece is spaced from the web, and at the delivery point, the web is disposed so that an outer edge portion of the workpiece and the web come into contact with each other, the apparatus further comprising a web position adjustment mechanism disposed on an upstream side in a conveyance direction of the web more than the abutment point and adjusting a position in a cross direction of the web, wherein the web position adjustment mechanism has: a sensor that detects position information of the cross direction of each detection target portion set on the web; and an adjustment mechanism that adjusts a position in a cross direction of the web, based on the positional information. a sensor that detects position information of the cross direction of each detection target portion set on the web; and an adjustment mechanism that adjusts a position in a cross direction of the web, based on the positional information.