New generation of smart computer lockstitch sewing machine, adopting touch control panel. Sewing function can be easily set after entering panel by simple fingertip clicking. Touch panel is easy to be set, able to be operated directly with many simple pictures guide for choosing. The machine has automatic corner device, so that corner sewing is more simple and convenient, tight seam function is simple and convenient, integrated system, equipped with stepper motor control needle stitch length.the normal and reverse stitch overlap ratio is high, high-power motor make the machine needle penetrability stronger, more able to achieve thick material and the connecting part sewing, optimization of the knife design, when start sewing,it bring the bottom line better, adjustable height of the presser foot, electronic knee lifter, simple operation.