At present, liposuction is the fastest and most effective way to remove double chin. Liposuction can suck out the fat pad outside the platysma and remove the double chin. Generally, patients with liposuction less than 200ml and excessive skin relaxation may have lumps, painful nodules and skin relaxation after operation. Generally, it will be completely eliminated gradually in 1-2 years, with good long-term effect, no need to inhale again and no rebound.