Bionic double eyelid is a double eyelid surgery method developed by Zhang Jianjun, which has changed the shortcomings of dull and unreal eyes in traditional double eyelid surgery. Bionic double eyelids simulate the forming principle of natural double eyelids. During the operation, only a small amount of orbicularis oculi muscle was removed, and the double eyelid line was suspended at the lower end of levator palpebrae superioris fascia, with little injury and less bleeding. It is better to have double eyelids when you are an adult. If it is done once, it can be repaired after half a year.