Use computer-controlled servo motor to control feeding system which reduces many spare parts, and meanwhile makes the function of the machine more stable. The designabion of touch screen makes many process finished by touching sareen,such as changing the lengthof pin -point and stitch length, operating half stitch button,auto-adjustable positirve and negative pin-point, setting stitches and so on. Stored one thousand of stitches that you can select one of them through the touch screen.