A six-needle eight-thread stitch configuration includes six rows of threads (21-26) sewn to two adjoining portions (13, 14) respectively of two fabrics (11, 12). Each row of threads (21-26) tightens a top thread (3 3) and a bottom thread (4 4) respectively and extending sinuously on upper and lower sides of each adjoining portion (13, 14). Each row of threads (21-26) includes a plurality of upper loops (27) and a plurality of lower loops (28) respectively on the upper and lower sides of the adjoining portions (13, 14). The top thread (3 3) extends through the upper loops (27) of each row of threads (21-26) and is fixed to the upper sides of the fabrics (11, 12). The lower thread (4 4) extends through the lower loops (28) of each row of threads (21-26) and is fixed to the lower sides of the fabrics (11, 12).
