Double eyelid surgery, or blepharoplasty, is one of the most popular cosmetic surgeries performed on the Asian population and the most performed in plastic surgery. The general duration of eyelid surgery is about one hour, and the procedure is as follows: 1. The patient is designed in a sitting or standing position, and the width and curvature of the eyelids are considered according to the patient’s personality, occupation, gender, and age; 2. The patient is disinfected and toweled in a lying position, and the local anesthetic is injected, and the incision is performed a few minutes later. The incision process is to first cut the skin to remove excess loose skin, then remove the excess hypertrophic orbicularis oculi, orbital fat, and ROOF fat to achieve the goal of both improving upper eyelid bloating and forming double eyelids; 3. Finally, the suture stage is performed, and the requirement of recovering as soon as possible after surgery without significant swelling can be achieved through precision suturing and precision hemostasis. Routinely the above operations can be completed within 1 hour, but if the patient is prone to bleeding, the hemostasis time will be extended accordingly, which will increase the operation time. In addition, for some difficult and complex cases, such as blepharoplasty requiring repair of the levator muscle, the time required may be longer, perhaps 2 or 3 hours or more.