1. Social and cultural factors: In Korea, appearance and image are very important. Many people think that having a good appearance can improve self-confidence and social skills. So Koreans attach great importance to their appearance and are willing to invest in plastic surgery to improve their appearance.

2. Development of cosmetic technology: South Korea has always been in a leading position in cosmetic technology. Korean plastic surgeons have accumulated rich experience through professional training and continuous practice. They use advanced technology and equipment to provide patients with safe and effective plastic surgery.

3. Commercialization of cosmetics industry: South Korea's cosmetics industry is very commercialized. Many companies specialize in the research, development and sales of plastic surgery, beauty products and plastic surgery technology. These companies have invested a lot of money in advertising and marketing, making cosmetic surgery and services more popular and accessible.

4. Government support: The Korean government has given some support and supervision to the cosmetic industry. For example, the government has set up a special certification body for cosmetic hospitals to ensure that only qualified hospitals and doctors can provide cosmetic services. In addition, the government also encourages enterprises to invest in the cosmetics industry through tax incentives.

5. Star effect: Many Korean stars are spokesmen and promoters of the plastic surgery industry. Their successful cases and beautiful appearance attracted a large number of fans to pay attention to plastic surgery and promoted the development of the whole industry.