A disposable worn article including a stretchable laminate sheet including a thermoplastic stretchable film laminated on a non-woven fabric containing thermoplastic fiber therein, wherein: the non-woven fabric and the stretchable film are welded together at a plurality of first welding portions and a plurality of second welding portions; the first welding portions each have a longer first length in a first direction, and each have a first width, shorter than the first length, in a second direction perpendicular to the first direction; and the second welding portions each have a longer second length in a third direction crossing the first direction, and each have a second width, shorter than the second length, in a fourth direction perpendicular to the third direction the disposable worn article includes: a girth portion formed from the stretchable laminate sheet, extending in a girth direction of a wearer, and configured to cover a torso of the wearer; and an absorbent body configured to cover a crotch of the wearer; the girth portion includes a lower edge portion, an upper edge portion, and a middle portion between the lower edge portion and the upper edge portion; the first welding portions are arranged intermittently in the girth direction and arranged intermittently in a vertical direction perpendicular to the girth direction; the second welding portions are arranged intermittently in the girth direction and arranged intermittently in the vertical direction; a length of each of the first welding portions in the vertical direction perpendicular to the girth direction is longer than a length thereof in the girth direction; a length of each of the second welding portions in the girth direction is longer than a length thereof in the vertical direction; the first welding portions that are longer in the vertical direction are provided in a matrix pattern in the lower edge portion and in the middle portion of the girth portion; and the second welding portions that are longer in the girth direction are provided in a matrix pattern in the upper edge portion of the girth portion. the non-woven fabric and the stretchable film are welded together at a plurality of first welding portions and a plurality of second welding portions; the first welding portions each have a longer first length in a first direction, and each have a first width, shorter than the first length, in a second direction perpendicular to the first direction; and the second welding portions each have a longer second length in a third direction crossing the first direction, and each have a second width, shorter than the second length, in a fourth direction perpendicular to the third direction the disposable worn article includes: a girth portion formed from the stretchable laminate sheet, extending in a girth direction of a wearer, and configured to cover a torso of the wearer; and an absorbent body configured to cover a crotch of the wearer; the girth portion includes a lower edge portion, an upper edge portion, and a middle portion between the lower edge portion and the upper edge portion; the first welding portions are arranged intermittently in the girth direction and arranged intermittently in a vertical direction perpendicular to the girth direction; the second welding portions are arranged intermittently in the girth direction and arranged intermittently in the vertical direction; a length of each of the first welding portions in the vertical direction perpendicular to the girth direction is longer than a length thereof in the girth direction; a length of each of the second welding portions in the girth direction is longer than a length thereof in the vertical direction; the first welding portions that are longer in the vertical direction are provided in a matrix pattern in the lower edge portion and in the middle portion of the girth portion; and the second welding portions that are longer in the girth direction are provided in a matrix pattern in the upper edge portion of the girth portion.