Face-lifting needle is mainly used for face-lifting masseter muscle. The principle is to block nerves, relax muscles, paralyze over-developed muscles, and make originally hypertrophy muscles contract. Its function is to make the masseter muscle partially atrophy, but it does not affect the basic physiological function of the masseter muscle. The effect is very reliable. The injection effect in regular hospitals is better. Chengdu Mei Cheng Plastic Surgery Hospital has been established for more than 20 years, and it is still a reliable hospital.