Cosmetic surgery involves many aspects, including skin care, non-surgical treatments and surgical treatments. Cosmetic surgery can certainly change a person’s appearance to achieve a beauty that they were not born with: big watery eyes, full breasts, agile nose, slim body, etc. Cosmetic surgery can also restore the look of youth to older people. Cosmetic surgery changes people’s appearance, but it also makes these candidates happier and more confident in their lives afterwards. Skin care is the first step in changing your appearance, and a good normal skin is the basis for cosmetic surgery. When the skin becomes saggy and wrinkles appear, one can undergo skin lift surgery on the face, eyelids, neck, and breasts, thus removing excess skin and achieving a taut skin effect. When a person is dissatisfied with his nose, eyes, breast size or abdominal fat, cosmetic surgery can also change the shape of these normal body structures to beautify the body. Cosmetic surgery is slowly developed through plastic surgery. From one hundred and fifty years ago to now, it is difficult to distinguish cosmetic surgery from plastic surgery, and many doctors even think that plastic surgery is cosmetic surgery and cosmetic surgery is plastic surgery. In fact, plastic surgery is very different from cosmetic surgery, plastic surgery is a surgical science in the human body to repair the defect, its scientific name is repair and reconstruction surgery, plastic surgery is only a common name of this surgical science. Many people arbitrarily distinguish cosmetic surgery from plastic surgery, but who can argue that a nose is not just oversized, not deformed? And who recognizes that an abdominal fat bulge is a cosmetic problem, but a post-pregnancy abdominal bulge is not? Why is a small bilateral breast development cosmetic surgery, but a small breast development on one side becomes restorative and reconstructive surgery? Therefore, cosmetic surgery is only a part of plastic surgery (restorative and reconstructive surgery). The modern era of cosmetic surgery began in the mid-nineteenth century when nasal reshaping was introduced, and later gradually ear and breast reshaping surgery was carried out. The early days of cosmetic surgery were controversial, and many people believed that cosmetic surgery was unimportant and unnecessary. This perception has continued even to this day. For example, in the U.S. plastic surgery residency training system, training in cosmetic surgery is often downplayed, or even ignored, with a strong emphasis on training in reconstructive surgery. In Chinese surgical residency training, there is even no training subject for cosmetic surgery. Some beauty lovers tend to endorse cosmetic procedures such as double eyelids performed in skin care stores or hairdressers. It was only after the twentieth century that cosmetic surgery procedures such as eyelid, injectable fillers, and wrinkle removal became widely performed. World War II led to a tremendous development in reconstructive surgery, and the large number of war injuries treated led to a great improvement in many surgical skills for repairing and mending, while at the same time, the level of cosmetic surgery reached a new stage. In the United States, after the 1980s, with the development of liposuction technology and other technologies, cosmetic surgery is widely recognized by people, the number of cosmetic surgeons also gradually increased, after the 1990s, a variety of cosmetic technology, while the cosmetic advertising industry is overwhelming, the development of cosmetic surgery to the peak era. After entering the new century, the acceleration of its development has only slowed down. In China, cosmetic surgery began to flourish in the late nineties and has been widely admired by beauty lovers until now. From the advent of cosmetic surgery over a hundred years ago, a good economy has been a strong foundation for its development. While the world economy is currently slowing down, the number of cosmetic surgeries continues to increase around the world. According to statistics, in 2005, there were 2.1 million cosmetic surgeries and 9.3 million non-surgical cosmetic procedures performed in the United States. In China, this development is still accelerating. Cosmetic surgery is one of the more unique fields of medicine. Unlike other fields of medicine, cosmetic surgery is not used to treat disease and therefore no insurance company can provide medical coverage for it. At the same time, the subject of cosmetic surgery must be physically and mentally healthy, and its surgical plan is definitely planned before the operation, there is no exploratory surgery and very few emergency surgeries.