This machine adopts a connecting rod for thread picking, a large rotary shuttle for thread hooking, an automatic lubrication system, and is equipped with an upper and lower feeding mechanism and a presser foot alternating lifting mechanism to form 301 thread marks. It has strong sewing ability and good layer sewing performance. It adopts an automatic lubrication device, low noise, long service life, and is suitable for leather, synthetic leather, canvas, seat cushions, sofas, and luggage products.