Cutting double eyelid surgery is a common cosmetic surgery. Double eyelid surgery's common shortcoming is that there may be two eyes with different sizes and asymmetrical appearance. Besides, you may not be able to open your eyes. Beauty seekers can choose a regular professional plastic surgery hospital when doing surgery, which can greatly reduce these unfavorable opportunities. Specifically, the hazards of double eyelid surgery will occur in the following situations. Generally, the main harm is that it may cause ptosis: if the double eyelids are cut too big or too deep, it is easy to cause the levator palpebrae superioris to break, which can not effectively play its role, resulting in incomplete or unable to open eyes, ptosis to the pupil level, resulting in postoperative ptosis, thus forming the harm of double eyelid surgery. Some plastic surgeons are limited by experience and technology, or patients go to irregular hospitals for surgery, so some complications also occur from time to time. Such as: hematoma, infection, scar exposure, tears overflow, ptosis, excessive depression of the upper eyelid, etc.