Every era has a different definition of beauty, and so do double eyelids. Before the Qing Dynasty, women were required to be subtle and take single eyelids as beauty, but nowadays, while retaining the natural beauty of women, they pursue more confidence and openness, so double eyelids and big eyes become the mainstream demand for people to pursue beauty. So, what kind of double eyelids look more natural with single eyelids? Is it possible to do this surgery for all single eyelids? How is the popular double eyelid “small incision” surgery done now? The formation of double eyelids is related to ethnicity. Only 50% of Chinese people have double eyelids as adults. This is due to the vast size of China and the history of inter-ethnic marriages, which has resulted in a wide variety of eyelid shapes, making it a challenge for doctors who perform Chinese blepharoplasty. The double eyelid fold is a parallel curve that follows the upper eyelid, and the purpose of double eyelid surgery is to surgically form adhesions within the upper eyelid to create this fold. Although double eyelid surgery is simple to say and is the most commonly performed cosmetic surgery, this does not mean that it is a simple procedure. A certain shape of double eyelid may not be suitable for everyone, and different surgical methods should be designed for different people. Therefore, he often reminds himself that it is easy to do a good double eyelid surgery, but not easy to do a good double eyelid; it is easy to do a good double eyelid, but not easy to do every double eyelid.