The lower eyelids are bloated, bulging or drooping to varying degrees, and bag-like abnormalities are called eye bags. They mostly occur in middle-aged and elderly people over 40 years old, but can also occur in young people. Once bags under the eyes appear, they will make people lose their youthful luster and give them a sense of aging and haggardness. They will not only have a great impact on the appearance, but in severe cases may even cause inconvenience to life and work. Therefore, in recent years, more and more people have requested blepharoplasty, which has become one of the common cosmetic oculoplastic surgeries. The causes of bags under the eyes are generally believed to be caused by aging and degeneration, resulting in weakened elasticity, sagging and sagging of the lower eyelid skin, weakened elasticity, sagging and sagging of the orbicularis oculi muscle of the lower eyelid, deformation and sagging of the orbital septum, and displacement and increase of orbital fat. One or more of the above factors can lead to the formation of bags under the eyes. In addition, it is also related to genetics. This condition is more common in young people and can be considered a congenital eyelid deformity. However, it must be noted that some young people have a horizontal bulge in front of the tarsal plate just below the eyelid margin, which is especially obvious when smiling, making the lower eyelid appear bulging and bloated. This sign is caused by local hypertrophy or accumulation of the lower orbicularis muscle and is called muscular eye bags (also known as pseudo eye bags). Surgery is generally not recommended for patients with mild muscular eye bags, but for severe cases, part of the orbicularis oculi muscle should be removed. At present, there are many measures to treat bags under the eyes, many of which have little effect, such as topical medication, cosmetics, local physical therapy, etc. The most effective one is surgical treatment. Among the surgical methods, there are external incisions along the lower eyelid skin incision path and inferior fornix conjunctival incision path. There are two types of internal incisions. The external incision is generally suitable for older people with looser skin and orbicularis oculi muscles. The internal incision is generally suitable for younger people with tighter skin. It takes about one week for swelling to subside after surgery, but it takes three months to more than six months for complete stabilization. It should be pointed out that there is currently a method called 'liposuction to remove bags under the eyes' on the market. Although this method caters to the psychology of some people, it is very unscientific. Blind operation can easily lead to bleeding and cannot stop the bleeding. Often, There will be complications that shouldn't happen.