The difference between muscle lift surgery and double eyelid surgery lies in the different treatment modalities, different effects, and different causes. 1. Different treatment methods: Lift muscle surgery is a surgical procedure that removes loose skin from the eyes to tighten the skin and improve the phenomenon of drooping eyebrows. Double eyelid surgery, also known as blepharoplasty, is a surgical procedure that changes the tissue structure of the eyelid to form a fold on top of the eyelid, resulting in double eyelids. 2. Differences in effect: The main function of the muscle lift surgery is to relieve sagging skin and make the double eyelids more visible, while the double eyelid surgery can improve the appearance of the eyes and make them more attractive. 3. Different causes: Double eyelid surgery is suitable for people who need to change the shape of their eyelids from single eyelids to double eyelids, while the strength of the levator muscle has not been adjusted in any way, and levator muscle surgery is mainly for people with ptosis. It is recommended that patients after eye surgery follow the doctor’s instructions for care, regular checkups, and prompt medical attention when discomfort occurs.