Method for sewing fabric using an overlock sewing machine (2, 3), in which over-edge stitching is performed through mutual cooperation of: a needle that has, at a tip thereof, a thread hole, into which the needle thread is inserted, and that moves up and down; an upper looper that has, at a tip thereof, a thread hole, into which a first looper thread is inserted, and that operates intersecting a feed direction of the fabric (2, 3); and lower looper that has, at a tip thereof, a thread hole, into which the second looper thread is inserted, and that operates intersecting the feed direction of the fabric (2, 3), wherein a position, at which over-edge stitching is performed on a side face of a claw of a needle plate, is disposed outwardly spaced from the edges (2a, 3a) of the pieces of fabric (2, 3) that are cut by upper and lower knives (19, 20), the method comprising aligning the edges (2a, 3a) and forming a stitch along the edges (2a, 3a) while causing a part of a needle thread to run through two vertically superposed pieces of fabric (2, 3) at regular intervals, from above the two pieces of fabric (2, 3); on the upper face of the upper fabric, forming a loop by running a first looper thread in zigzag towards beyond the edges (2a, 3a) so as to entwine two needle threads that pass through the stitch holes; on the lower face of the lower fabric, forming a loop by causing an annular leading end of the passed-through needle thread to extend beyond the edge of the fabric (2a, 3 a); beyond the edges (2a, 3a) of the pieces of fabric (2, 3), linking the first looper thread and the needle thread as a result of the second looper thread repeatedly entering, from above, each loop hole that is formed by the first looper thread, exiting the loop hole while entwining two opposing threads of two adjacent loops formed by the needle thread at the bottom of the loop hole, and entering thereupon a neighboring loop hole formed by the first looper thread, to perform over-edge stitching at a position away from the edges (2a, 3a) of the pieces of fabric (2, 3); and thereafter, spreading out the two pieces of fabric (2, 3), to i) join the two pieces of fabric (2, 3) in a state where the respective edges (2a, 3a) are connected to each other or ii) thereby fold back the edge (2a, 3a) of the one piece of fabric (2, 3), and join the two pieces of fabric (2, 3) in a state where the edge (3a, 2a) of the other piece of fabric (3, 2) overlaps the fold-back portion, relaxing the tension of the needle thread to cause a lower looper to carry the annular leading end of the needle thread that has run through two pieces of fabric (2, 3), to a position outwardly spaced from edges (2a, 3a) of the pieces of fabric (2, 3), thereby performing over-edge stitching by the first looper thread, the second looper thread and the needle thread at the position; characterized in that the method further comprises passing a needle thread through a threading hole (25a, 26a) of a looper thread take-up (25, 26), such that, when the lower looper moves, the lower looper carries the annular leading end of the loosened needle thread. i) join the two pieces of fabric (2, 3) in a state where the respective edges (2a, 3a) are connected to each other or ii) thereby fold back the edge (2a, 3a) of the one piece of fabric (2, 3), and join the two pieces of fabric (2, 3) in a state where the edge (3a, 2a) of the other piece of fabric (3, 2) overlaps the fold-back portion,