This portable facial tightening HIFU machine uses ultrasound as the energy source, focusing the ultrasound energy emitted by the ultrasound waves on the SMAS layer of the body, creating a focal area of high acoustic intensity in the SMAS, which can penetrate deep into the skin from 3.0mm-4.5mm. The temperature of the SMAS tissue reaches over 65°C within 0.5-1 second, causing the collagen in the SMAS tissue to reorganize without damage The collagen in the SMAS tissue is reorganized without damaging the normal tissue outside the lesion area, thus achieving the effect of fascial lifting. In addition, the portable HIFU tightening machine has the advantages of high quality, high precision, simple operation, small size, easy maintenance, low failure rate, and long service life. It is very popular among these modern women. Portable HIFU skin tightening machine is widely used in hospitals, beauty salons, etc.