A method for sewing a slide fastener to sew an interlocking element linked member of a slide fastener to an end edge portion of a work piece, the slide fastener including the interlocking element linked member in which a plurality of interlocking elements are linked with a string portion, wherein the interlocking element includes a leg portion supported by the string portion and a head portion which interlocks with an interlocking element of another interlocking element linked member as a pair and which projects from the leg portion, the sewing method comprising: by sewing, forming a head portion needle drop point on a head portion side of the interlocking element with relation to the string portion and an end edge portion needle drop point (a2 to a6) on an end edge portion side of the work piece with relation to the string portion, wherein the end edge portion needle drop points (a2 to a6) are provided in at least two positions (a2, a6), which are a one end portion and another end portion, within an overlapped portion folding the work piece, within a range toward a tip side of the end edge portion of half of an overlapped width in the overlapped portion with relation to a projecting direction of the head portion of the interlocking element, and within a range on an inner side of a width of the leg portion of the interlocking element in a longitudinal direction of the string portion; and sewing in which sewing thread passing from the head portion needle drop point (a1, a11) to the end edge portion needle drop point (a2 to a6) of the one end portion and sewing thread passing from the end edge portion needle drop point (a2 to a6) of the another end portion to the head portion needle drop point (a1, a11) of an adjacent interlocking element each pass a side on either side of the leg portion of the interlocking element in the longitudinal direction of the string portion. wherein the interlocking element includes a leg portion supported by the string portion and a head portion which interlocks with an interlocking element of another interlocking element linked member as a pair and which projects from the leg portion, the sewing method comprising: by sewing, forming a head portion needle drop point on a head portion side of the interlocking element with relation to the string portion and an end edge portion needle drop point (a2 to a6) on an end edge portion side of the work piece with relation to the string portion, wherein the end edge portion needle drop points (a2 to a6) are provided in at least two positions (a2, a6), which are a one end portion and another end portion, within an overlapped portion folding the work piece, within a range toward a tip side of the end edge portion of half of an overlapped width in the overlapped portion with relation to a projecting direction of the head portion of the interlocking element, and within a range on an inner side of a width of the leg portion of the interlocking element in a longitudinal direction of the string portion; and sewing in which sewing thread passing from the head portion needle drop point (a1, a11) to the end edge portion needle drop point (a2 to a6) of the one end portion and sewing thread passing from the end edge portion needle drop point (a2 to a6) of the another end portion to the head portion needle drop point (a1, a11) of an adjacent interlocking element each pass a side on either side of the leg portion of the interlocking element in the longitudinal direction of the string portion. by sewing, forming a head portion needle drop point on a head portion side of the interlocking element with relation to the string portion and an end edge portion needle drop point (a2 to a6) on an end edge portion side of the work piece with relation to the string portion, wherein the end edge portion needle drop points (a2 to a6) are provided in at least two positions (a2, a6), which are a one end portion and another end portion, within an overlapped portion folding the work piece, within a range toward a tip side of the end edge portion of half of an overlapped width in the overlapped portion with relation to a projecting direction of the head portion of the interlocking element, and within a range on an inner side of a width of the leg portion of the interlocking element in a longitudinal direction of the string portion; and sewing in which sewing thread passing from the head portion needle drop point (a1, a11) to the end edge portion needle drop point (a2 to a6) of the one end portion and sewing thread passing from the end edge portion needle drop point (a2 to a6) of the another end portion to the head portion needle drop point (a1, a11) of an adjacent interlocking element each pass a side on either side of the leg portion of the interlocking element in the longitudinal direction of the string portion.