This model cylinder bed interlock sewig machine can be equipped with direct drive automatic trimmer, be suitable for kinds of fabric material to sew decoration stitches, especially for the connection or decoration of kinds of neckline, cuff and other similar small parts. Adopts small size servo motor instead of traditional strap, can start to work or stop quickly, shorten transmission route, upgrade the precision. With automatic trimmer, automatic adjusting speed, automatic sotping needle and other amtomatic functions, can upgrade the production efficiency, reduce any malfunction to minimum during sewing, in order to sew top quality stitches.