Generally speaking, double eyelid surgery can be done for everyone with a single lid who loves beauty. However, they are not always the best fit. The best people for double eyelid surgery are those who have the following basic conditions: 1) long eye fissures; 2) thin eyelids; 3) tight skin, not bloated, no obvious swollen eyes; 4) long eyelashes; 5) high nose bridge; 6) round and long face. People with less favorable conditions need to move toward such goals to achieve better results, such as proper removal of sagging excess skin, removal of some fat from the bloated upper lids, and making the eyelashes slightly curved and more radiant. The shape and width of the eyelid should also be designed according to each individual’s preference and temperament. Although blepharoplasty is the most common surgery, it is also one of the most difficult to perform well.