That may be because the eyelids are slack and can be repaired. The failed double eyelid repair surgery is one of the most common cosmetic surgery at present. It seems simple, but it is not easy to satisfy all patients. It not only requires the performer to have exquisite surgical skills, good aesthetic views and rich design experience, but also requires an accurate grasp of the patient's facial anatomy and psychology. However, because many doctors often use incorrect designs when plastic surgery is popular, the curvature and shape of double eyelids become poor, so it is necessary to correct the bad double eyelids at this time.