An apparatus for manufacturing a spouted pouch package including a pouch and a spout, the pouch including a body section which is heat-sealed at side edges thereof, a top gusset section provided on a top end portion of the body section, and a bottom gusset section provided on a bottom end portion of the body section, the spout being attached to the top gusset section of the pouch, the apparatus comprising: a package-material conveying unit, which pulls a long band-shaped package material out from a package-material roll, a score-line forming unit, which forms score lines (L1, L2, L3, L4, L5, L6) on the package material, a hole-forming unit, which forms a spout attachment hole in an area corresponding to the top gusset section, a folding unit which folds the long band-shaped package material while the package material is conveyed, the package material being folded in a width direction of the package material such that a conveying direction in which the package material is conveyed is aligned with a width direction of the pouch; a continuous conveying unit, which continuously conveys the package material is disposed between the folding unit and a spout-attaching unit, the spout-attaching unit attaches the spout to a portion of the folded package material which corresponds to the top gusset section; an accumulator section which is disposed between the continuous conveying unit and the spout-attaching unit, a first sealing unit including sealing bars which heat-seal a portion of the folded package corresponding to a peripheral edge of the top gusset section and a portion of the folded package corresponding to a top edge of the body section to each other, a second sealing unit including sealing bars which heat-seal portions of the folded package corresponding to side edges of the body section to each other and heat-seals a portion of the folded package corresponding to a peripheral edge of the bottom gusset section and a portion of the folded package corresponding to a peripheral edge of the bottom end portion of the body section to each other; and an intermittent conveying unit which intermittently conveys the package material is disposed between the second sealing unit and a cutting unit, the cutting unit cuts the heat-sealed portions formed at the portions corresponding to the side edges of the body section, thereby releasing the spouted pouch package, wherein said folding unit folds the package material in a way such that a side portion of the package material in the width direction of the package material forms a part of the peripheral edge of the top gusset section in the pouch. a package-material conveying unit, which pulls a long band-shaped package material out from a package-material roll, a score-line forming unit, which forms score lines (L1, L2, L3, L4, L5, L6) on the package material, a hole-forming unit, which forms a spout attachment hole in an area corresponding to the top gusset section, a folding unit which folds the long band-shaped package material while the package material is conveyed, the package material being folded in a width direction of the package material such that a conveying direction in which the package material is conveyed is aligned with a width direction of the pouch; a continuous conveying unit, which continuously conveys the package material is disposed between the folding unit and a spout-attaching unit, the spout-attaching unit attaches the spout to a portion of the folded package material which corresponds to the top gusset section; an accumulator section which is disposed between the continuous conveying unit and the spout-attaching unit, a first sealing unit including sealing bars which heat-seal a portion of the folded package corresponding to a peripheral edge of the top gusset section and a portion of the folded package corresponding to a top edge of the body section to each other, a second sealing unit including sealing bars which heat-seal portions of the folded package corresponding to side edges of the body section to each other and heat-seals a portion of the folded package corresponding to a peripheral edge of the bottom gusset section and a portion of the folded package corresponding to a peripheral edge of the bottom end portion of the body section to each other; and an intermittent conveying unit which intermittently conveys the package material is disposed between the second sealing unit and a cutting unit, the cutting unit cuts the heat-sealed portions formed at the portions corresponding to the side edges of the body section, thereby releasing the spouted pouch package, wherein said folding unit folds the package material in a way such that a side portion of the package material in the width direction of the package material forms a part of the peripheral edge of the top gusset section in the pouch.