The guide rail of automatic cloth breaking machine can be automatically lifted and lowered, the pressure of the guide rail can be adjusted, and the machine head can automatically rebound. It is equipped with cutting width limit protection device, intelligent automatic device, infrared induction device, elastic power line, which can avoid the phenomenon of line shaking and breakage. It is easy to operate, with time-saving, labor-saving and material saving, automatic reset, automatic counting display, fast knife grinding speed, fast cutting speed and noise. It has characteristics of low sound, high precision, neat pressing without dislocation, synchronous pressing, automatic cutting to avoid the dislocation of accessories.