Facial plastic surgery can be divided into major categories, including rhinoplasty (rhinoplasty, nasal tip plastic surgery, deformity nose correction surgery, etc. ), eye plastic surgery, facial plastic surgery, ear plastic surgery, skin plastic surgery. Eye plastic surgery includes double eyelid surgery, pouch removal, epicanthus plastic surgery, canthotomy and so on. And facial plastic surgery includes mandibular angle plastic surgery, masseter muscle plastic surgery, buccal fat pad plastic surgery and chin plastic. 1. The main surgical methods are plastic surgery of bones and liposuction of soft tissues, which is called facial liposuction. 2. At present, the safest and most effective injection methods are botulinum toxin, hyaluronic acid and autologous fat. Botulinum toxin is aimed at masseter muscle, mainly to inhibit the innervation of masseter muscle, so that this muscle gradually shrinks, and has obvious effect on mandibular angle hypertrophy caused by masseter muscle hypertrophy. Hyaluronic acid and autologous fat are mainly used to fill facial depressions, thus changing facial contours. 3. Prosthesis or autologous tissue filling method Autologous tissue mainly includes composite tissue of bone, cartilage and dermis, and biomaterials mainly include silica gel and swelling.