The formation of double eyelids and single eyelids is due to genetic factors, usually double eyelids are controlled by dominant genes and single eyelids are controlled by recessive genes. If one eye has double eyelids and the other eye has single eyelids, it is usually the result of congenital genetics. In general, bilateral eyelid shape inconsistency does not need to be treated. However, many candidates believe that the inconsistent eyelids will affect their appearance and want to get better visual results, they can take the following methods: 1. Use double eyelid stickers to turn single eyelids into double eyelids, but the effect can only be maintained temporarily for a few hours; 2. If they want to get permanent double eyelids, candidates can do blepharoplasty, or double eyelid surgery. The commonly used surgical methods are the buried wire method and the incision method, of which the incision method is divided into two types: minimally invasive incision and full incision. The submerged method is only suitable for those with thin eyelids and no skin laxity or fat prolapse, while the full cut is suitable for all people. Candidates need to choose the right method to improve their appearance according to their own situation. When choosing the procedure, attention needs to be paid to the operation in a regular hospital and by a professional doctor.