Surgery can be performed from single eyelid to double eyelid. There are generally three surgical methods in double eyelid surgery, including catgut embedding, minimally invasive and total excision, which should be selected according to the degree of skin relaxation. If the skin is not very loose, you can bury the thread. Minimally invasive mainly adopts three-point minimally invasive method. Sometimes you can cut two small incisions, even one small incision, remove the tissue after cutting, and then suture, or you can form double eyelids. There is also a total cut method. After all incision, according to the degree of skin relaxation, a certain amount of fat and muscle are removed, and a certain amount of skin is removed when necessary, and then double eyelids are formed by suture. Generally speaking, these three methods should be judged according to the preoperative situation and decide which one to adopt.