A pull-on disposable diaper comprising: a waist opening; a pair of leg openings; a front portion to be placed on a front of a wearer wearing the diaper; a rear portion to be placed on a rear of the wearer; and a disposal tape for disposing the diaper arranged on an outer surface of the disposable diaper to maintain a disposal shape of the disposable diaper, wherein the disposal tape includes a fixing part fixed to the outer surface of the disposable diaper, an extensible part, and an attachment part in sequence in a longitudinal direction of the disposal tape and is folded in three stacked in the sequence, in the disposal tape folded in three, the attachment part and the extensible part are releasably joined, and the extensible part and the fixing part are also releasably joined, the attachment part starts to extend at a tensile strength higher than a tensile strength at which the extensible part starts to extend, a peel strength between the extensible part and the fixing part is lower than the tensile strength at which the extensible part starts to extend, a peel strength between the attachment part and the extensible part is lower than the tensile strength at which the extensible part starts to extend, the tensile strength at which the extensible part starts to extend is 6.5 N or less, and the peel strength between the attachment part and the extensible part is 4.0 N or less, wherein the peel strength between the extensible part and the fixing part is measured with the method as described in paragraph of the A1-publication, the peel strength between the attachment part and the extensible part is measured with the method as described in paragraph of the A1-publication, and the tensile strength is measured with the method as described in paragraph of the A1-publication. a waist opening; a pair of leg openings; a front portion to be placed on a front of a wearer wearing the diaper; a rear portion to be placed on a rear of the wearer; and a disposal tape for disposing the diaper arranged on an outer surface of the disposable diaper to maintain a disposal shape of the disposable diaper, wherein the disposal tape includes a fixing part fixed to the outer surface of the disposable diaper, an extensible part, and an attachment part in sequence in a longitudinal direction of the disposal tape and is folded in three stacked in the sequence, in the disposal tape folded in three, the attachment part and the extensible part are releasably joined, and the extensible part and the fixing part are also releasably joined, the attachment part starts to extend at a tensile strength higher than a tensile strength at which the extensible part starts to extend, a peel strength between the extensible part and the fixing part is lower than the tensile strength at which the extensible part starts to extend, a peel strength between the attachment part and the extensible part is lower than the tensile strength at which the extensible part starts to extend, the tensile strength at which the extensible part starts to extend is 6.5 N or less, and the peel strength between the attachment part and the extensible part is 4.0 N or less, wherein the peel strength between the extensible part and the fixing part is measured with the method as described in paragraph of the A1-publication, the peel strength between the attachment part and the extensible part is measured with the method as described in paragraph of the A1-publication, and the tensile strength is measured with the method as described in paragraph of the A1-publication.