With the increasing demand for facial rejuvenation and anti-aging, non-invasive aesthetic treatment technology has gradually become the focus of research in the field of medical aesthetics. In recent years, non-surgical treatment methods based on ultrasonic technology have developed rapidly, especially focused ultrasound technology. Focused ultrasound utilizes the high temperature and micro-trauma generated by high frequency ultrasound waves focused at a specific depth under the skin to achieve the effect of lifting and tightening facial skin, and has been widely used in the treatment of various aesthetic problems, such as facial skin relaxation, wrinkles and sagging contours. Its unique non-invasive characteristics and high accuracy make it gradually become an important methods of light medical beauty. Based on the latest literature and clinical research, this paper will discuss the application status, clinical effects and future development direction of focused ultrasound technology in facial medical aesthetics, in order to provide theoretical support and practical reference for the further promotion and application of this technology.