The concept of "double eyelid repair" in Lemaire cfr: double eyelid repair after the failure of bilateral double eyelid plasty (one or more times). Double eyelid repair is not an eye surgery, nor a double eyelid plastic surgery, but a difficult "repair" operation that combines the double standards of "ophthalmology functional cure standard" and "cosmetic surgery medical aesthetic standard". The purpose of the operation is to improve the function and shape of the eyes on the basis of the destruction of the original shape, function and anatomical structure of the double eyelids, combined with aesthetics. Different from the normal eye shape, function and anatomical structure, eye plastic surgery is a delicate operation with high difficulty, high standard and high requirements. Doctors are required to have a correct concept of eye plastic surgery, high surgical skills and many years of clinical experience in eye surgery. Double eyelid repair surgery is different from double eyelid surgery in essence, concept and operation method.